Home / 725,198.20-1,000,750.62-398,510.20

Finding the Fourth Proportional to 725,198.20, 1,000,750.62 and 398,510.20

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Solution

The fourth proportional to 725,198.20, 1,000,750.62 and 398,510.20 is: 549,931.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,198.20 : 1,000,750.62 = 398,510.20 : x
  2. Step 2: Convert to fraction form
    725,198.20/1,000,750.62 = 398,510.20/x
  3. Step 3: Cross multiply
    725,198.20x = 1,000,750.62 × 398,510.20
  4. Step 4: Simplify right side
    725,198.20x = 398,809,329,726.32
  5. Step 5: Solve for x
    x = 398,809,329,726.32/725,198.20
  6. Step 6: Final answer
    x = 549,931.49

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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.