Home / 1,225,863,315.20-1,691,727,103.28-668,982,233.76

Finding the Fourth Proportional to 1,225,863,315.20, 1,691,727,103.28 and 668,982,233.76

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Solution

The fourth proportional to 1,225,863,315.20, 1,691,727,103.28 and 668,982,233.76 is: 923,214,980.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,863,315.20 : 1,691,727,103.28 = 668,982,233.76 : x
  2. Step 2: Convert to fraction form
    1,225,863,315.20/1,691,727,103.28 = 668,982,233.76/x
  3. Step 3: Cross multiply
    1,225,863,315.20x = 1,691,727,103.28 × 668,982,233.76
  4. Step 4: Simplify right side
    1,225,863,315.20x = 1,131,735,376,464,588,544
  5. Step 5: Solve for x
    x = 1,131,735,376,464,588,544/1,225,863,315.20
  6. Step 6: Final answer
    x = 923,214,980.36

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Half scale
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Double scale
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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.