Home / 714,478.32-985,982.22-392,221.44

Finding the Fourth Proportional to 714,478.32, 985,982.22 and 392,221.44

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Solution

The fourth proportional to 714,478.32, 985,982.22 and 392,221.44 is: 541,266.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,478.32 : 985,982.22 = 392,221.44 : x
  2. Step 2: Convert to fraction form
    714,478.32/985,982.22 = 392,221.44/x
  3. Step 3: Cross multiply
    714,478.32x = 985,982.22 × 392,221.44
  4. Step 4: Simplify right side
    714,478.32x = 386,723,366,142.80
  5. Step 5: Solve for x
    x = 386,723,366,142.80/714,478.32
  6. Step 6: Final answer
    x = 541,266.76

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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.