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Finding the Fourth Proportional to 878,034, 1,211,687.28 and 475,626

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Solution

The fourth proportional to 878,034, 1,211,687.28 and 475,626 is: 656,364.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,034 : 1,211,687.28 = 475,626 : x
  2. Step 2: Convert to fraction form
    878,034/1,211,687.28 = 475,626/x
  3. Step 3: Cross multiply
    878,034x = 1,211,687.28 × 475,626
  4. Step 4: Simplify right side
    878,034x = 576,309,974,237.28
  5. Step 5: Solve for x
    x = 576,309,974,237.28/878,034
  6. Step 6: Final answer
    x = 656,364.08

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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.