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Finding the Fourth Proportional to 425,188.29, 637,783.24 and 399,206.73

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Solution

The fourth proportional to 425,188.29, 637,783.24 and 399,206.73 is: 598,810.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,188.29 : 637,783.24 = 399,206.73 : x
  2. Step 2: Convert to fraction form
    425,188.29/637,783.24 = 399,206.73/x
  3. Step 3: Cross multiply
    425,188.29x = 637,783.24 × 399,206.73
  4. Step 4: Simplify right side
    425,188.29x = 254,607,357,502.27
  5. Step 5: Solve for x
    x = 254,607,357,502.27/425,188.29
  6. Step 6: Final answer
    x = 598,810.85

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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.