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Finding the Fourth Proportional to 490,418, 731,335.36 and 485,933.76

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Solution

The fourth proportional to 490,418, 731,335.36 and 485,933.76 is: 724,648.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,418 : 731,335.36 = 485,933.76 : x
  2. Step 2: Convert to fraction form
    490,418/731,335.36 = 485,933.76/x
  3. Step 3: Cross multiply
    490,418x = 731,335.36 × 485,933.76
  4. Step 4: Simplify right side
    490,418x = 355,380,541,305.75
  5. Step 5: Solve for x
    x = 355,380,541,305.75/490,418
  6. Step 6: Final answer
    x = 724,648.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.