Home / 714,456.56-985,895.88-392,115.44

Finding the Fourth Proportional to 714,456.56, 985,895.88 and 392,115.44

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Solution

The fourth proportional to 714,456.56, 985,895.88 and 392,115.44 is: 541,089.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,456.56 : 985,895.88 = 392,115.44 : x
  2. Step 2: Convert to fraction form
    714,456.56/985,895.88 = 392,115.44/x
  3. Step 3: Cross multiply
    714,456.56x = 985,895.88 × 392,115.44
  4. Step 4: Simplify right side
    714,456.56x = 386,584,996,780.39
  5. Step 5: Solve for x
    x = 386,584,996,780.39/714,456.56
  6. Step 6: Final answer
    x = 541,089.58

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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.