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Finding the Fourth Proportional to 994,838, 1,372,876.62 and 542,129

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Solution

The fourth proportional to 994,838, 1,372,876.62 and 542,129 is: 748,138.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,838 : 1,372,876.62 = 542,129 : x
  2. Step 2: Convert to fraction form
    994,838/1,372,876.62 = 542,129/x
  3. Step 3: Cross multiply
    994,838x = 1,372,876.62 × 542,129
  4. Step 4: Simplify right side
    994,838x = 744,276,229,123.98
  5. Step 5: Solve for x
    x = 744,276,229,123.98/994,838
  6. Step 6: Final answer
    x = 748,138.12

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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.