Home / 782,747.92-1,080,209.64-438,609.52

Finding the Fourth Proportional to 782,747.92, 1,080,209.64 and 438,609.52

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Solution

The fourth proportional to 782,747.92, 1,080,209.64 and 438,609.52 is: 605,290.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,747.92 : 1,080,209.64 = 438,609.52 : x
  2. Step 2: Convert to fraction form
    782,747.92/1,080,209.64 = 438,609.52/x
  3. Step 3: Cross multiply
    782,747.92x = 1,080,209.64 × 438,609.52
  4. Step 4: Simplify right side
    782,747.92x = 473,790,231,699.77
  5. Step 5: Solve for x
    x = 473,790,231,699.77/782,747.92
  6. Step 6: Final answer
    x = 605,290.95

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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.