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Finding the Fourth Proportional to 540,661.20, 811,114.98 and 287,808.46

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Solution

The fourth proportional to 540,661.20, 811,114.98 and 287,808.46 is: 431,778.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,661.20 : 811,114.98 = 287,808.46 : x
  2. Step 2: Convert to fraction form
    540,661.20/811,114.98 = 287,808.46/x
  3. Step 3: Cross multiply
    540,661.20x = 811,114.98 × 287,808.46
  4. Step 4: Simplify right side
    540,661.20x = 233,445,753,276.73
  5. Step 5: Solve for x
    x = 233,445,753,276.73/540,661.20
  6. Step 6: Final answer
    x = 431,778.26

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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.