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Finding the Fourth Proportional to 866,309.76, 1,299,686.04 and 333,687.78

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Solution

The fourth proportional to 866,309.76, 1,299,686.04 and 333,687.78 is: 500,616.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,309.76 : 1,299,686.04 = 333,687.78 : x
  2. Step 2: Convert to fraction form
    866,309.76/1,299,686.04 = 333,687.78/x
  3. Step 3: Cross multiply
    866,309.76x = 1,299,686.04 × 333,687.78
  4. Step 4: Simplify right side
    866,309.76x = 433,689,349,384.59
  5. Step 5: Solve for x
    x = 433,689,349,384.59/866,309.76
  6. Step 6: Final answer
    x = 500,616.95

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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.