Home / 498,007.57-687,242.32-283,143.03

Finding the Fourth Proportional to 498,007.57, 687,242.32 and 283,143.03

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Solution

The fourth proportional to 498,007.57, 687,242.32 and 283,143.03 is: 390,732.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,007.57 : 687,242.32 = 283,143.03 : x
  2. Step 2: Convert to fraction form
    498,007.57/687,242.32 = 283,143.03/x
  3. Step 3: Cross multiply
    498,007.57x = 687,242.32 × 283,143.03
  4. Step 4: Simplify right side
    498,007.57x = 194,587,872,829.03
  5. Step 5: Solve for x
    x = 194,587,872,829.03/498,007.57
  6. Step 6: Final answer
    x = 390,732.76

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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.