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Finding the Fourth Proportional to 425,129.67, 637,989.35 and 274,996.17

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Solution

The fourth proportional to 425,129.67, 637,989.35 and 274,996.17 is: 412,684.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,129.67 : 637,989.35 = 274,996.17 : x
  2. Step 2: Convert to fraction form
    425,129.67/637,989.35 = 274,996.17/x
  3. Step 3: Cross multiply
    425,129.67x = 637,989.35 × 274,996.17
  4. Step 4: Simplify right side
    425,129.67x = 175,444,626,375.81
  5. Step 5: Solve for x
    x = 175,444,626,375.81/425,129.67
  6. Step 6: Final answer
    x = 412,684.97

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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.