Home / 721,947.20-996,298.88-395,254.72

Finding the Fourth Proportional to 721,947.20, 996,298.88 and 395,254.72

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Solution

The fourth proportional to 721,947.20, 996,298.88 and 395,254.72 is: 545,457.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,947.20 : 996,298.88 = 395,254.72 : x
  2. Step 2: Convert to fraction form
    721,947.20/996,298.88 = 395,254.72/x
  3. Step 3: Cross multiply
    721,947.20x = 996,298.88 × 395,254.72
  4. Step 4: Simplify right side
    721,947.20x = 393,791,834,850.71
  5. Step 5: Solve for x
    x = 393,791,834,850.71/721,947.20
  6. Step 6: Final answer
    x = 545,457.94

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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.