Home / 564,791.20-779,417.27-310,147.72

Finding the Fourth Proportional to 564,791.20, 779,417.27 and 310,147.72

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Solution

The fourth proportional to 564,791.20, 779,417.27 and 310,147.72 is: 428,006.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,791.20 : 779,417.27 = 310,147.72 : x
  2. Step 2: Convert to fraction form
    564,791.20/779,417.27 = 310,147.72/x
  3. Step 3: Cross multiply
    564,791.20x = 779,417.27 × 310,147.72
  4. Step 4: Simplify right side
    564,791.20x = 241,734,486,882.90
  5. Step 5: Solve for x
    x = 241,734,486,882.90/564,791.20
  6. Step 6: Final answer
    x = 428,006.82

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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.