Home / 715,286.32-987,094.31-392,995.62

Finding the Fourth Proportional to 715,286.32, 987,094.31 and 392,995.62

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Solution

The fourth proportional to 715,286.32, 987,094.31 and 392,995.62 is: 542,333.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,286.32 : 987,094.31 = 392,995.62 : x
  2. Step 2: Convert to fraction form
    715,286.32/987,094.31 = 392,995.62/x
  3. Step 3: Cross multiply
    715,286.32x = 987,094.31 × 392,995.62
  4. Step 4: Simplify right side
    715,286.32x = 387,923,738,391.94
  5. Step 5: Solve for x
    x = 387,923,738,391.94/715,286.32
  6. Step 6: Final answer
    x = 542,333.51

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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.