Home / 589,449.12-813,439.79-321,177.12

Finding the Fourth Proportional to 589,449.12, 813,439.79 and 321,177.12

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Solution

The fourth proportional to 589,449.12, 813,439.79 and 321,177.12 is: 443,224.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,449.12 : 813,439.79 = 321,177.12 : x
  2. Step 2: Convert to fraction form
    589,449.12/813,439.79 = 321,177.12/x
  3. Step 3: Cross multiply
    589,449.12x = 813,439.79 × 321,177.12
  4. Step 4: Simplify right side
    589,449.12x = 261,258,249,045.61
  5. Step 5: Solve for x
    x = 261,258,249,045.61/589,449.12
  6. Step 6: Final answer
    x = 443,224.43

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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.