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Finding the Fourth Proportional to 615,704.40, 924,139.80 and 379,508.40

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Solution

The fourth proportional to 615,704.40, 924,139.80 and 379,508.40 is: 569,622.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,704.40 : 924,139.80 = 379,508.40 : x
  2. Step 2: Convert to fraction form
    615,704.40/924,139.80 = 379,508.40/x
  3. Step 3: Cross multiply
    615,704.40x = 924,139.80 × 379,508.40
  4. Step 4: Simplify right side
    615,704.40x = 350,718,816,874.32
  5. Step 5: Solve for x
    x = 350,718,816,874.32/615,704.40
  6. Step 6: Final answer
    x = 569,622.07

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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.