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Finding the Fourth Proportional to 999,432.64, 1,499,149.56 and 251,478.64

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Solution

The fourth proportional to 999,432.64, 1,499,149.56 and 251,478.64 is: 377,218.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,432.64 : 1,499,149.56 = 251,478.64 : x
  2. Step 2: Convert to fraction form
    999,432.64/1,499,149.56 = 251,478.64/x
  3. Step 3: Cross multiply
    999,432.64x = 1,499,149.56 × 251,478.64
  4. Step 4: Simplify right side
    999,432.64x = 377,004,092,505.40
  5. Step 5: Solve for x
    x = 377,004,092,505.40/999,432.64
  6. Step 6: Final answer
    x = 377,218.11

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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.