Home / 782,644.68-1,080,066.96-438,505.92

Finding the Fourth Proportional to 782,644.68, 1,080,066.96 and 438,505.92

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Solution

The fourth proportional to 782,644.68, 1,080,066.96 and 438,505.92 is: 605,147.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,644.68 : 1,080,066.96 = 438,505.92 : x
  2. Step 2: Convert to fraction form
    782,644.68/1,080,066.96 = 438,505.92/x
  3. Step 3: Cross multiply
    782,644.68x = 1,080,066.96 × 438,505.92
  4. Step 4: Simplify right side
    782,644.68x = 473,615,755,956.40
  5. Step 5: Solve for x
    x = 473,615,755,956.40/782,644.68
  6. Step 6: Final answer
    x = 605,147.86

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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.