Home / 1,225,863,467.52-1,691,727,313.68-668,982,386.40

Finding the Fourth Proportional to 1,225,863,467.52, 1,691,727,313.68 and 668,982,386.40

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Solution

The fourth proportional to 1,225,863,467.52, 1,691,727,313.68 and 668,982,386.40 is: 923,215,191.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,863,467.52 : 1,691,727,313.68 = 668,982,386.40 : x
  2. Step 2: Convert to fraction form
    1,225,863,467.52/1,691,727,313.68 = 668,982,386.40/x
  3. Step 3: Cross multiply
    1,225,863,467.52x = 1,691,727,313.68 × 668,982,386.40
  4. Step 4: Simplify right side
    1,225,863,467.52x = 1,131,735,775,443,707,776
  5. Step 5: Solve for x
    x = 1,131,735,775,443,707,776/1,225,863,467.52
  6. Step 6: Final answer
    x = 923,215,191.11

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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.