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Finding the Fourth Proportional to 542,656.40, 812,429.40 and 527,104.40

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Solution

The fourth proportional to 542,656.40, 812,429.40 and 527,104.40 is: 789,145.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,656.40 : 812,429.40 = 527,104.40 : x
  2. Step 2: Convert to fraction form
    542,656.40/812,429.40 = 527,104.40/x
  3. Step 3: Cross multiply
    542,656.40x = 812,429.40 × 527,104.40
  4. Step 4: Simplify right side
    542,656.40x = 428,235,111,429.36
  5. Step 5: Solve for x
    x = 428,235,111,429.36/542,656.40
  6. Step 6: Final answer
    x = 789,145.97

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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.