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Finding the Fourth Proportional to 866,620.92, 1,299,144.03 and 393,047.94

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Solution

The fourth proportional to 866,620.92, 1,299,144.03 and 393,047.94 is: 589,214.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,620.92 : 1,299,144.03 = 393,047.94 : x
  2. Step 2: Convert to fraction form
    866,620.92/1,299,144.03 = 393,047.94/x
  3. Step 3: Cross multiply
    866,620.92x = 1,299,144.03 × 393,047.94
  4. Step 4: Simplify right side
    866,620.92x = 510,625,884,754.80
  5. Step 5: Solve for x
    x = 510,625,884,754.80/866,620.92
  6. Step 6: Final answer
    x = 589,214.81

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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.