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Finding the Fourth Proportional to 407,593.60, 611,389.92 and 267,319.40

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Solution

The fourth proportional to 407,593.60, 611,389.92 and 267,319.40 is: 400,978.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,593.60 : 611,389.92 = 267,319.40 : x
  2. Step 2: Convert to fraction form
    407,593.60/611,389.92 = 267,319.40/x
  3. Step 3: Cross multiply
    407,593.60x = 611,389.92 × 267,319.40
  4. Step 4: Simplify right side
    407,593.60x = 163,436,386,580.45
  5. Step 5: Solve for x
    x = 163,436,386,580.45/407,593.60
  6. Step 6: Final answer
    x = 400,978.79

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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.