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Finding the Fourth Proportional to 542,871.81, 814,723.41 and 390,995.93

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Solution

The fourth proportional to 542,871.81, 814,723.41 and 390,995.93 is: 586,793.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,871.81 : 814,723.41 = 390,995.93 : x
  2. Step 2: Convert to fraction form
    542,871.81/814,723.41 = 390,995.93/x
  3. Step 3: Cross multiply
    542,871.81x = 814,723.41 × 390,995.93
  4. Step 4: Simplify right side
    542,871.81x = 318,553,533,312.10
  5. Step 5: Solve for x
    x = 318,553,533,312.10/542,871.81
  6. Step 6: Final answer
    x = 586,793.29

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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.