Home / 641,929.20-961,972.20-472,124.40

Finding the Fourth Proportional to 641,929.20, 961,972.20 and 472,124.40

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Solution

The fourth proportional to 641,929.20, 961,972.20 and 472,124.40 is: 707,508.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,929.20 : 961,972.20 = 472,124.40 : x
  2. Step 2: Convert to fraction form
    641,929.20/961,972.20 = 472,124.40/x
  3. Step 3: Cross multiply
    641,929.20x = 961,972.20 × 472,124.40
  4. Step 4: Simplify right side
    641,929.20x = 454,170,547,741.68
  5. Step 5: Solve for x
    x = 454,170,547,741.68/641,929.20
  6. Step 6: Final answer
    x = 707,508.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.