Home / 725,612.01-1,001,356.56-398,938.83

Finding the Fourth Proportional to 725,612.01, 1,001,356.56 and 398,938.83

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Solution

The fourth proportional to 725,612.01, 1,001,356.56 and 398,938.83 is: 550,542.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,612.01 : 1,001,356.56 = 398,938.83 : x
  2. Step 2: Convert to fraction form
    725,612.01/1,001,356.56 = 398,938.83/x
  3. Step 3: Cross multiply
    725,612.01x = 1,001,356.56 × 398,938.83
  4. Step 4: Simplify right side
    725,612.01x = 399,480,014,459.23
  5. Step 5: Solve for x
    x = 399,480,014,459.23/725,612.01
  6. Step 6: Final answer
    x = 550,542.18

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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.