Home / 715,246.38-986,999.13-392,950.05

Finding the Fourth Proportional to 715,246.38, 986,999.13 and 392,950.05

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Solution

The fourth proportional to 715,246.38, 986,999.13 and 392,950.05 is: 542,248.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,246.38 : 986,999.13 = 392,950.05 : x
  2. Step 2: Convert to fraction form
    715,246.38/986,999.13 = 392,950.05/x
  3. Step 3: Cross multiply
    715,246.38x = 986,999.13 × 392,950.05
  4. Step 4: Simplify right side
    715,246.38x = 387,841,357,483.46
  5. Step 5: Solve for x
    x = 387,841,357,483.46/715,246.38
  6. Step 6: Final answer
    x = 542,248.61

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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.