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Finding the Fourth Proportional to 616,775.20, 924,471.60 and 261,728.80

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Solution

The fourth proportional to 616,775.20, 924,471.60 and 261,728.80 is: 392,299.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,775.20 : 924,471.60 = 261,728.80 : x
  2. Step 2: Convert to fraction form
    616,775.20/924,471.60 = 261,728.80/x
  3. Step 3: Cross multiply
    616,775.20x = 924,471.60 × 261,728.80
  4. Step 4: Simplify right side
    616,775.20x = 241,960,842,502.08
  5. Step 5: Solve for x
    x = 241,960,842,502.08/616,775.20
  6. Step 6: Final answer
    x = 392,299.89

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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.