Home / 867,721.91-1,302,422.46-418,758.83

Finding the Fourth Proportional to 867,721.91, 1,302,422.46 and 418,758.83

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Solution

The fourth proportional to 867,721.91, 1,302,422.46 and 418,758.83 is: 628,543.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,721.91 : 1,302,422.46 = 418,758.83 : x
  2. Step 2: Convert to fraction form
    867,721.91/1,302,422.46 = 418,758.83/x
  3. Step 3: Cross multiply
    867,721.91x = 1,302,422.46 × 418,758.83
  4. Step 4: Simplify right side
    867,721.91x = 545,400,899,003.21
  5. Step 5: Solve for x
    x = 545,400,899,003.21/867,721.91
  6. Step 6: Final answer
    x = 628,543.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.