Home / 715,023.54-986,757.66-392,763.42

Finding the Fourth Proportional to 715,023.54, 986,757.66 and 392,763.42

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Solution

The fourth proportional to 715,023.54, 986,757.66 and 392,763.42 is: 542,027.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,023.54 : 986,757.66 = 392,763.42 : x
  2. Step 2: Convert to fraction form
    715,023.54/986,757.66 = 392,763.42/x
  3. Step 3: Cross multiply
    715,023.54x = 986,757.66 × 392,763.42
  4. Step 4: Simplify right side
    715,023.54x = 387,562,313,252.80
  5. Step 5: Solve for x
    x = 387,562,313,252.80/715,023.54
  6. Step 6: Final answer
    x = 542,027.35

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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.