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Finding the Fourth Proportional to 951,728, 1,313,501.28 and 549,320

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Solution

The fourth proportional to 951,728, 1,313,501.28 and 549,320 is: 758,128.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    951,728 : 1,313,501.28 = 549,320 : x
  2. Step 2: Convert to fraction form
    951,728/1,313,501.28 = 549,320/x
  3. Step 3: Cross multiply
    951,728x = 1,313,501.28 × 549,320
  4. Step 4: Simplify right side
    951,728x = 721,532,523,129.60
  5. Step 5: Solve for x
    x = 721,532,523,129.60/951,728
  6. Step 6: Final answer
    x = 758,128.92

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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.