Home / 718,260.56-991,207.22-395,982.20

Finding the Fourth Proportional to 718,260.56, 991,207.22 and 395,982.20

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Solution

The fourth proportional to 718,260.56, 991,207.22 and 395,982.20 is: 546,459.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,260.56 : 991,207.22 = 395,982.20 : x
  2. Step 2: Convert to fraction form
    718,260.56/991,207.22 = 395,982.20/x
  3. Step 3: Cross multiply
    718,260.56x = 991,207.22 × 395,982.20
  4. Step 4: Simplify right side
    718,260.56x = 392,500,416,129.59
  5. Step 5: Solve for x
    x = 392,500,416,129.59/718,260.56
  6. Step 6: Final answer
    x = 546,459.65

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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.