Home / 725,439.78-1,001,170.53-403,215.30

Finding the Fourth Proportional to 725,439.78, 1,001,170.53 and 403,215.30

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Solution

The fourth proportional to 725,439.78, 1,001,170.53 and 403,215.30 is: 556,472.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,439.78 : 1,001,170.53 = 403,215.30 : x
  2. Step 2: Convert to fraction form
    725,439.78/1,001,170.53 = 403,215.30/x
  3. Step 3: Cross multiply
    725,439.78x = 1,001,170.53 × 403,215.30
  4. Step 4: Simplify right side
    725,439.78x = 403,687,275,605.11
  5. Step 5: Solve for x
    x = 403,687,275,605.11/725,439.78
  6. Step 6: Final answer
    x = 556,472.48

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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.