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Finding the Fourth Proportional to 425,267.12, 637,901.56 and 399,285.52

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Solution

The fourth proportional to 425,267.12, 637,901.56 and 399,285.52 is: 598,929.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,267.12 : 637,901.56 = 399,285.52 : x
  2. Step 2: Convert to fraction form
    425,267.12/637,901.56 = 399,285.52/x
  3. Step 3: Cross multiply
    425,267.12x = 637,901.56 × 399,285.52
  4. Step 4: Simplify right side
    425,267.12x = 254,704,856,093.41
  5. Step 5: Solve for x
    x = 254,704,856,093.41/425,267.12
  6. Step 6: Final answer
    x = 598,929.11

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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.