Home / 498,320.78-687,443.56-326,162.97

Finding the Fourth Proportional to 498,320.78, 687,443.56 and 326,162.97

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Solution

The fourth proportional to 498,320.78, 687,443.56 and 326,162.97 is: 449,948.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,320.78 : 687,443.56 = 326,162.97 : x
  2. Step 2: Convert to fraction form
    498,320.78/687,443.56 = 326,162.97/x
  3. Step 3: Cross multiply
    498,320.78x = 687,443.56 × 326,162.97
  4. Step 4: Simplify right side
    498,320.78x = 224,218,632,421.57
  5. Step 5: Solve for x
    x = 224,218,632,421.57/498,320.78
  6. Step 6: Final answer
    x = 449,948.39

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1.5x scale

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.