Home / 721,939.93-996,288.85-395,247.43

Finding the Fourth Proportional to 721,939.93, 996,288.85 and 395,247.43

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Solution

The fourth proportional to 721,939.93, 996,288.85 and 395,247.43 is: 545,447.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,939.93 : 996,288.85 = 395,247.43 : x
  2. Step 2: Convert to fraction form
    721,939.93/996,288.85 = 395,247.43/x
  3. Step 3: Cross multiply
    721,939.93x = 996,288.85 × 395,247.43
  4. Step 4: Simplify right side
    721,939.93x = 393,780,604,055.21
  5. Step 5: Solve for x
    x = 393,780,604,055.21/721,939.93
  6. Step 6: Final answer
    x = 545,447.88

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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.