Home / 725,308.38-1,000,905.78-403,010.18

Finding the Fourth Proportional to 725,308.38, 1,000,905.78 and 403,010.18

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Solution

The fourth proportional to 725,308.38, 1,000,905.78 and 403,010.18 is: 556,143.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,308.38 : 1,000,905.78 = 403,010.18 : x
  2. Step 2: Convert to fraction form
    725,308.38/1,000,905.78 = 403,010.18/x
  3. Step 3: Cross multiply
    725,308.38x = 1,000,905.78 × 403,010.18
  4. Step 4: Simplify right side
    725,308.38x = 403,375,218,560.84
  5. Step 5: Solve for x
    x = 403,375,218,560.84/725,308.38
  6. Step 6: Final answer
    x = 556,143.06

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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.