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Finding the Fourth Proportional to 425,189.29, 637,784.74 and 399,207.73

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Solution

The fourth proportional to 425,189.29, 637,784.74 and 399,207.73 is: 598,812.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,189.29 : 637,784.74 = 399,207.73 : x
  2. Step 2: Convert to fraction form
    425,189.29/637,784.74 = 399,207.73/x
  3. Step 3: Cross multiply
    425,189.29x = 637,784.74 × 399,207.73
  4. Step 4: Simplify right side
    425,189.29x = 254,608,598,284.04
  5. Step 5: Solve for x
    x = 254,608,598,284.04/425,189.29
  6. Step 6: Final answer
    x = 598,812.35

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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.