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Finding the Fourth Proportional to 400,765.97, 600,817.83 and 187,428.90

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Solution

The fourth proportional to 400,765.97, 600,817.83 and 187,428.90 is: 280,988.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,765.97 : 600,817.83 = 187,428.90 : x
  2. Step 2: Convert to fraction form
    400,765.97/600,817.83 = 187,428.90/x
  3. Step 3: Cross multiply
    400,765.97x = 600,817.83 × 187,428.90
  4. Step 4: Simplify right side
    400,765.97x = 112,610,626,527.50
  5. Step 5: Solve for x
    x = 112,610,626,527.50/400,765.97
  6. Step 6: Final answer
    x = 280,988.49

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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.