Home / 718,265.28-991,161.60-395,958.72

Finding the Fourth Proportional to 718,265.28, 991,161.60 and 395,958.72

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Solution

The fourth proportional to 718,265.28, 991,161.60 and 395,958.72 is: 546,398.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,265.28 : 991,161.60 = 395,958.72 : x
  2. Step 2: Convert to fraction form
    718,265.28/991,161.60 = 395,958.72/x
  3. Step 3: Cross multiply
    718,265.28x = 991,161.60 × 395,958.72
  4. Step 4: Simplify right side
    718,265.28x = 392,459,078,449.15
  5. Step 5: Solve for x
    x = 392,459,078,449.15/718,265.28
  6. Step 6: Final answer
    x = 546,398.51

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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.