Home / 420,140.76-627,532.18-380,098

Finding the Fourth Proportional to 420,140.76, 627,532.18 and 380,098

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Solution

The fourth proportional to 420,140.76, 627,532.18 and 380,098 is: 567,723.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,140.76 : 627,532.18 = 380,098 : x
  2. Step 2: Convert to fraction form
    420,140.76/627,532.18 = 380,098/x
  3. Step 3: Cross multiply
    420,140.76x = 627,532.18 × 380,098
  4. Step 4: Simplify right side
    420,140.76x = 238,523,726,553.64
  5. Step 5: Solve for x
    x = 238,523,726,553.64/420,140.76
  6. Step 6: Final answer
    x = 567,723.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.