Home / 721,036.80-1,081,227.15-321,471.90

Finding the Fourth Proportional to 721,036.80, 1,081,227.15 and 321,471.90

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Solution

The fourth proportional to 721,036.80, 1,081,227.15 and 321,471.90 is: 482,061.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,036.80 : 1,081,227.15 = 321,471.90 : x
  2. Step 2: Convert to fraction form
    721,036.80/1,081,227.15 = 321,471.90/x
  3. Step 3: Cross multiply
    721,036.80x = 1,081,227.15 × 321,471.90
  4. Step 4: Simplify right side
    721,036.80x = 347,584,146,242.09
  5. Step 5: Solve for x
    x = 347,584,146,242.09/721,036.80
  6. Step 6: Final answer
    x = 482,061.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.