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Finding the Fourth Proportional to 615,453.40, 921,624.90 and 403,946.20

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Solution

The fourth proportional to 615,453.40, 921,624.90 and 403,946.20 is: 604,898.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,453.40 : 921,624.90 = 403,946.20 : x
  2. Step 2: Convert to fraction form
    615,453.40/921,624.90 = 403,946.20/x
  3. Step 3: Cross multiply
    615,453.40x = 921,624.90 × 403,946.20
  4. Step 4: Simplify right side
    615,453.40x = 372,286,876,180.38
  5. Step 5: Solve for x
    x = 372,286,876,180.38/615,453.40
  6. Step 6: Final answer
    x = 604,898.56

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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.