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Finding the Fourth Proportional to 542,926.64, 814,389.42 and 371,979.92

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Solution

The fourth proportional to 542,926.64, 814,389.42 and 371,979.92 is: 557,969.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,926.64 : 814,389.42 = 371,979.92 : x
  2. Step 2: Convert to fraction form
    542,926.64/814,389.42 = 371,979.92/x
  3. Step 3: Cross multiply
    542,926.64x = 814,389.42 × 371,979.92
  4. Step 4: Simplify right side
    542,926.64x = 302,936,511,300.45
  5. Step 5: Solve for x
    x = 302,936,511,300.45/542,926.64
  6. Step 6: Final answer
    x = 557,969.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.