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Finding the Fourth Proportional to 878,696.96, 1,212,563.32 and 516,158

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Solution

The fourth proportional to 878,696.96, 1,212,563.32 and 516,158 is: 712,275.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,696.96 : 1,212,563.32 = 516,158 : x
  2. Step 2: Convert to fraction form
    878,696.96/1,212,563.32 = 516,158/x
  3. Step 3: Cross multiply
    878,696.96x = 1,212,563.32 × 516,158
  4. Step 4: Simplify right side
    878,696.96x = 625,874,258,124.56
  5. Step 5: Solve for x
    x = 625,874,258,124.56/878,696.96
  6. Step 6: Final answer
    x = 712,275.43

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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.