Home / 725,266.40-1,000,807.46-398,562.23

Finding the Fourth Proportional to 725,266.40, 1,000,807.46 and 398,562.23

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Solution

The fourth proportional to 725,266.40, 1,000,807.46 and 398,562.23 is: 549,982.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,266.40 : 1,000,807.46 = 398,562.23 : x
  2. Step 2: Convert to fraction form
    725,266.40/1,000,807.46 = 398,562.23/x
  3. Step 3: Cross multiply
    725,266.40x = 1,000,807.46 × 398,562.23
  4. Step 4: Simplify right side
    725,266.40x = 398,884,046,061.39
  5. Step 5: Solve for x
    x = 398,884,046,061.39/725,266.40
  6. Step 6: Final answer
    x = 549,982.80

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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.