Home / 728,619.40-1,092,929.10-413,691.40

Finding the Fourth Proportional to 728,619.40, 1,092,929.10 and 413,691.40

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Solution

The fourth proportional to 728,619.40, 1,092,929.10 and 413,691.40 is: 620,537.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,619.40 : 1,092,929.10 = 413,691.40 : x
  2. Step 2: Convert to fraction form
    728,619.40/1,092,929.10 = 413,691.40/x
  3. Step 3: Cross multiply
    728,619.40x = 1,092,929.10 × 413,691.40
  4. Step 4: Simplify right side
    728,619.40x = 452,135,369,479.74
  5. Step 5: Solve for x
    x = 452,135,369,479.74/728,619.40
  6. Step 6: Final answer
    x = 620,537.10

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1.5x scale

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.