Home / 725,372.54-1,001,023.16-398,721.21

Finding the Fourth Proportional to 725,372.54, 1,001,023.16 and 398,721.21

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Solution

The fourth proportional to 725,372.54, 1,001,023.16 and 398,721.21 is: 550,240.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,372.54 : 1,001,023.16 = 398,721.21 : x
  2. Step 2: Convert to fraction form
    725,372.54/1,001,023.16 = 398,721.21/x
  3. Step 3: Cross multiply
    725,372.54x = 1,001,023.16 × 398,721.21
  4. Step 4: Simplify right side
    725,372.54x = 399,129,164,903.97
  5. Step 5: Solve for x
    x = 399,129,164,903.97/725,372.54
  6. Step 6: Final answer
    x = 550,240.24

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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.