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Finding the Fourth Proportional to 453,753.58, 679,441.29 and 319,909.18

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Solution

The fourth proportional to 453,753.58, 679,441.29 and 319,909.18 is: 479,025.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,753.58 : 679,441.29 = 319,909.18 : x
  2. Step 2: Convert to fraction form
    453,753.58/679,441.29 = 319,909.18/x
  3. Step 3: Cross multiply
    453,753.58x = 679,441.29 × 319,909.18
  4. Step 4: Simplify right side
    453,753.58x = 217,359,505,942.04
  5. Step 5: Solve for x
    x = 217,359,505,942.04/453,753.58
  6. Step 6: Final answer
    x = 479,025.43

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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.