Home / 721,276.56-1,082,255.04-321,881.76

Finding the Fourth Proportional to 721,276.56, 1,082,255.04 and 321,881.76

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Solution

The fourth proportional to 721,276.56, 1,082,255.04 and 321,881.76 is: 482,974.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,276.56 : 1,082,255.04 = 321,881.76 : x
  2. Step 2: Convert to fraction form
    721,276.56/1,082,255.04 = 321,881.76/x
  3. Step 3: Cross multiply
    721,276.56x = 1,082,255.04 × 321,881.76
  4. Step 4: Simplify right side
    721,276.56x = 348,358,157,044.07
  5. Step 5: Solve for x
    x = 348,358,157,044.07/721,276.56
  6. Step 6: Final answer
    x = 482,974.46

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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.