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Finding the Fourth Proportional to 615,892.80, 924,760.80 and 429,729.60

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Solution

The fourth proportional to 615,892.80, 924,760.80 and 429,729.60 is: 645,237.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,892.80 : 924,760.80 = 429,729.60 : x
  2. Step 2: Convert to fraction form
    615,892.80/924,760.80 = 429,729.60/x
  3. Step 3: Cross multiply
    615,892.80x = 924,760.80 × 429,729.60
  4. Step 4: Simplify right side
    615,892.80x = 397,397,088,679.68
  5. Step 5: Solve for x
    x = 397,397,088,679.68/615,892.80
  6. Step 6: Final answer
    x = 645,237.43

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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.