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Finding the Fourth Proportional to 425,251.52, 637,878.18 and 399,269.96

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Solution

The fourth proportional to 425,251.52, 637,878.18 and 399,269.96 is: 598,905.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,251.52 : 637,878.18 = 399,269.96 : x
  2. Step 2: Convert to fraction form
    425,251.52/637,878.18 = 399,269.96/x
  3. Step 3: Cross multiply
    425,251.52x = 637,878.18 × 399,269.96
  4. Step 4: Simplify right side
    425,251.52x = 254,685,592,820.60
  5. Step 5: Solve for x
    x = 254,685,592,820.60/425,251.52
  6. Step 6: Final answer
    x = 598,905.78

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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.