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Finding the Fourth Proportional to 994,837, 1,372,875.24 and 542,128

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Solution

The fourth proportional to 994,837, 1,372,875.24 and 542,128 is: 748,136.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,837 : 1,372,875.24 = 542,128 : x
  2. Step 2: Convert to fraction form
    994,837/1,372,875.24 = 542,128/x
  3. Step 3: Cross multiply
    994,837x = 1,372,875.24 × 542,128
  4. Step 4: Simplify right side
    994,837x = 744,274,108,110.72
  5. Step 5: Solve for x
    x = 744,274,108,110.72/994,837
  6. Step 6: Final answer
    x = 748,136.74

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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.