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Finding the Fourth Proportional to 634,169.20, 875,143.56 and 347,691.76

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Solution

The fourth proportional to 634,169.20, 875,143.56 and 347,691.76 is: 479,809.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,169.20 : 875,143.56 = 347,691.76 : x
  2. Step 2: Convert to fraction form
    634,169.20/875,143.56 = 347,691.76/x
  3. Step 3: Cross multiply
    634,169.20x = 875,143.56 × 347,691.76
  4. Step 4: Simplify right side
    634,169.20x = 304,280,204,629.07
  5. Step 5: Solve for x
    x = 304,280,204,629.07/634,169.20
  6. Step 6: Final answer
    x = 479,809.18

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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.