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Finding the Fourth Proportional to 415,792.80, 623,689.20 and 410,263.20

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Solution

The fourth proportional to 415,792.80, 623,689.20 and 410,263.20 is: 615,394.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,792.80 : 623,689.20 = 410,263.20 : x
  2. Step 2: Convert to fraction form
    415,792.80/623,689.20 = 410,263.20/x
  3. Step 3: Cross multiply
    415,792.80x = 623,689.20 × 410,263.20
  4. Step 4: Simplify right side
    415,792.80x = 255,876,726,997.44
  5. Step 5: Solve for x
    x = 255,876,726,997.44/415,792.80
  6. Step 6: Final answer
    x = 615,394.80

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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.