Home / 498,318.26-687,463.47-304,734.43

Finding the Fourth Proportional to 498,318.26, 687,463.47 and 304,734.43

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Solution

The fourth proportional to 498,318.26, 687,463.47 and 304,734.43 is: 420,401.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,318.26 : 687,463.47 = 304,734.43 : x
  2. Step 2: Convert to fraction form
    498,318.26/687,463.47 = 304,734.43/x
  3. Step 3: Cross multiply
    498,318.26x = 687,463.47 × 304,734.43
  4. Step 4: Simplify right side
    498,318.26x = 209,493,788,676.27
  5. Step 5: Solve for x
    x = 209,493,788,676.27/498,318.26
  6. Step 6: Final answer
    x = 420,401.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.