Home / 715,288.32-987,097.06-392,997.62

Finding the Fourth Proportional to 715,288.32, 987,097.06 and 392,997.62

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Solution

The fourth proportional to 715,288.32, 987,097.06 and 392,997.62 is: 542,336.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,288.32 : 987,097.06 = 392,997.62 : x
  2. Step 2: Convert to fraction form
    715,288.32/987,097.06 = 392,997.62/x
  3. Step 3: Cross multiply
    715,288.32x = 987,097.06 × 392,997.62
  4. Step 4: Simplify right side
    715,288.32x = 387,926,795,289.00
  5. Step 5: Solve for x
    x = 387,926,795,289.00/715,288.32
  6. Step 6: Final answer
    x = 542,336.26

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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.