Home / 715,023.46-986,740.41-392,741.02

Finding the Fourth Proportional to 715,023.46, 986,740.41 and 392,741.02

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Solution

The fourth proportional to 715,023.46, 986,740.41 and 392,741.02 is: 541,987.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,023.46 : 986,740.41 = 392,741.02 : x
  2. Step 2: Convert to fraction form
    715,023.46/986,740.41 = 392,741.02/x
  3. Step 3: Cross multiply
    715,023.46x = 986,740.41 × 392,741.02
  4. Step 4: Simplify right side
    715,023.46x = 387,533,435,098.62
  5. Step 5: Solve for x
    x = 387,533,435,098.62/715,023.46
  6. Step 6: Final answer
    x = 541,987.02

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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.