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Finding the Fourth Proportional to 878,679.96, 1,212,539.86 and 516,141

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Solution

The fourth proportional to 878,679.96, 1,212,539.86 and 516,141 is: 712,251.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,679.96 : 1,212,539.86 = 516,141 : x
  2. Step 2: Convert to fraction form
    878,679.96/1,212,539.86 = 516,141/x
  3. Step 3: Cross multiply
    878,679.96x = 1,212,539.86 × 516,141
  4. Step 4: Simplify right side
    878,679.96x = 625,841,535,880.26
  5. Step 5: Solve for x
    x = 625,841,535,880.26/878,679.96
  6. Step 6: Final answer
    x = 712,251.97

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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.