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Finding the Fourth Proportional to 669,864.62, 924,359.54 and 383,319.02

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Solution

The fourth proportional to 669,864.62, 924,359.54 and 383,319.02 is: 528,949.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,864.62 : 924,359.54 = 383,319.02 : x
  2. Step 2: Convert to fraction form
    669,864.62/924,359.54 = 383,319.02/x
  3. Step 3: Cross multiply
    669,864.62x = 924,359.54 × 383,319.02
  4. Step 4: Simplify right side
    669,864.62x = 354,324,593,000.45
  5. Step 5: Solve for x
    x = 354,324,593,000.45/669,864.62
  6. Step 6: Final answer
    x = 528,949.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.