Home / 1,225,863,312.20-1,691,727,099.14-668,982,230.76

Finding the Fourth Proportional to 1,225,863,312.20, 1,691,727,099.14 and 668,982,230.76

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Solution

The fourth proportional to 1,225,863,312.20, 1,691,727,099.14 and 668,982,230.76 is: 923,214,976.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,863,312.20 : 1,691,727,099.14 = 668,982,230.76 : x
  2. Step 2: Convert to fraction form
    1,225,863,312.20/1,691,727,099.14 = 668,982,230.76/x
  3. Step 3: Cross multiply
    1,225,863,312.20x = 1,691,727,099.14 × 668,982,230.76
  4. Step 4: Simplify right side
    1,225,863,312.20x = 1,131,735,368,619,820,928
  5. Step 5: Solve for x
    x = 1,131,735,368,619,820,928/1,225,863,312.20
  6. Step 6: Final answer
    x = 923,214,976.22

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Half scale
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Double scale
Find fourth proportional to 1,225,863,313.20, 1,691,727,100.52 and 668,982,231.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.