Home / 589,272.12-813,195.66-321,000.12

Finding the Fourth Proportional to 589,272.12, 813,195.66 and 321,000.12

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Solution

The fourth proportional to 589,272.12, 813,195.66 and 321,000.12 is: 442,980.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,272.12 : 813,195.66 = 321,000.12 : x
  2. Step 2: Convert to fraction form
    589,272.12/813,195.66 = 321,000.12/x
  3. Step 3: Cross multiply
    589,272.12x = 813,195.66 × 321,000.12
  4. Step 4: Simplify right side
    589,272.12x = 261,035,904,443.48
  5. Step 5: Solve for x
    x = 261,035,904,443.48/589,272.12
  6. Step 6: Final answer
    x = 442,980.24

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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.