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Finding the Fourth Proportional to 827,726.80, 1,241,806.20 and 266,774.80

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Solution

The fourth proportional to 827,726.80, 1,241,806.20 and 266,774.80 is: 400,231.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,726.80 : 1,241,806.20 = 266,774.80 : x
  2. Step 2: Convert to fraction form
    827,726.80/1,241,806.20 = 266,774.80/x
  3. Step 3: Cross multiply
    827,726.80x = 1,241,806.20 × 266,774.80
  4. Step 4: Simplify right side
    827,726.80x = 331,282,600,643.76
  5. Step 5: Solve for x
    x = 331,282,600,643.76/827,726.80
  6. Step 6: Final answer
    x = 400,231.82

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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.