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Finding the Fourth Proportional to 878,098.56, 1,211,832 and 538,520.64

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Solution

The fourth proportional to 878,098.56, 1,211,832 and 538,520.64 is: 743,192.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,098.56 : 1,211,832 = 538,520.64 : x
  2. Step 2: Convert to fraction form
    878,098.56/1,211,832 = 538,520.64/x
  3. Step 3: Cross multiply
    878,098.56x = 1,211,832 × 538,520.64
  4. Step 4: Simplify right side
    878,098.56x = 652,596,544,212.48
  5. Step 5: Solve for x
    x = 652,596,544,212.48/878,098.56
  6. Step 6: Final answer
    x = 743,192.82

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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.