Home / 679,185.92-937,221.72-392,724.56

Finding the Fourth Proportional to 679,185.92, 937,221.72 and 392,724.56

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Solution

The fourth proportional to 679,185.92, 937,221.72 and 392,724.56 is: 541,928.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,185.92 : 937,221.72 = 392,724.56 : x
  2. Step 2: Convert to fraction form
    679,185.92/937,221.72 = 392,724.56/x
  3. Step 3: Cross multiply
    679,185.92x = 937,221.72 × 392,724.56
  4. Step 4: Simplify right side
    679,185.92x = 368,069,987,609.44
  5. Step 5: Solve for x
    x = 368,069,987,609.44/679,185.92
  6. Step 6: Final answer
    x = 541,928.18

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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.