Home / 498,280.18-687,642.66-283,414.72

Finding the Fourth Proportional to 498,280.18, 687,642.66 and 283,414.72

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Solution

The fourth proportional to 498,280.18, 687,642.66 and 283,414.72 is: 391,121.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,280.18 : 687,642.66 = 283,414.72 : x
  2. Step 2: Convert to fraction form
    498,280.18/687,642.66 = 283,414.72/x
  3. Step 3: Cross multiply
    498,280.18x = 687,642.66 × 283,414.72
  4. Step 4: Simplify right side
    498,280.18x = 194,888,051,943.96
  5. Step 5: Solve for x
    x = 194,888,051,943.96/498,280.18
  6. Step 6: Final answer
    x = 391,121.42

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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.