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Finding the Fourth Proportional to 867,405.92, 1,197,754.97 and 545,219.78

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Solution

The fourth proportional to 867,405.92, 1,197,754.97 and 545,219.78 is: 752,865.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,405.92 : 1,197,754.97 = 545,219.78 : x
  2. Step 2: Convert to fraction form
    867,405.92/1,197,754.97 = 545,219.78/x
  3. Step 3: Cross multiply
    867,405.92x = 1,197,754.97 × 545,219.78
  4. Step 4: Simplify right side
    867,405.92x = 653,039,692,522.43
  5. Step 5: Solve for x
    x = 653,039,692,522.43/867,405.92
  6. Step 6: Final answer
    x = 752,865.16

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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.