Home / 718,825.60-991,986.24-396,549.28

Finding the Fourth Proportional to 718,825.60, 991,986.24 and 396,549.28

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Solution

The fourth proportional to 718,825.60, 991,986.24 and 396,549.28 is: 547,241.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,825.60 : 991,986.24 = 396,549.28 : x
  2. Step 2: Convert to fraction form
    718,825.60/991,986.24 = 396,549.28/x
  3. Step 3: Cross multiply
    718,825.60x = 991,986.24 × 396,549.28
  4. Step 4: Simplify right side
    718,825.60x = 393,371,429,241.91
  5. Step 5: Solve for x
    x = 393,371,429,241.91/718,825.60
  6. Step 6: Final answer
    x = 547,241.82

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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.