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Finding the Fourth Proportional to 564,870.11, 779,519.79 and 310,221.27

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Solution

The fourth proportional to 564,870.11, 779,519.79 and 310,221.27 is: 428,104.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,870.11 : 779,519.79 = 310,221.27 : x
  2. Step 2: Convert to fraction form
    564,870.11/779,519.79 = 310,221.27/x
  3. Step 3: Cross multiply
    564,870.11x = 779,519.79 × 310,221.27
  4. Step 4: Simplify right side
    564,870.11x = 241,823,619,243.93
  5. Step 5: Solve for x
    x = 241,823,619,243.93/564,870.11
  6. Step 6: Final answer
    x = 428,104.83

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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.