Home / 721,932.31-996,278.38-395,239.85

Finding the Fourth Proportional to 721,932.31, 996,278.38 and 395,239.85

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Solution

The fourth proportional to 721,932.31, 996,278.38 and 395,239.85 is: 545,437.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,932.31 : 996,278.38 = 395,239.85 : x
  2. Step 2: Convert to fraction form
    721,932.31/996,278.38 = 395,239.85/x
  3. Step 3: Cross multiply
    721,932.31x = 996,278.38 × 395,239.85
  4. Step 4: Simplify right side
    721,932.31x = 393,768,919,483.43
  5. Step 5: Solve for x
    x = 393,768,919,483.43/721,932.31
  6. Step 6: Final answer
    x = 545,437.45

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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.