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Finding the Fourth Proportional to 449,612.66, 671,139.04 and 392,861.13

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Solution

The fourth proportional to 449,612.66, 671,139.04 and 392,861.13 is: 586,425.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,612.66 : 671,139.04 = 392,861.13 : x
  2. Step 2: Convert to fraction form
    449,612.66/671,139.04 = 392,861.13/x
  3. Step 3: Cross multiply
    449,612.66x = 671,139.04 × 392,861.13
  4. Step 4: Simplify right side
    449,612.66x = 263,664,441,641.52
  5. Step 5: Solve for x
    x = 263,664,441,641.52/449,612.66
  6. Step 6: Final answer
    x = 586,425.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.