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Finding the Fourth Proportional to 548,618.15, 819,281.76 and 542,680.45

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Solution

The fourth proportional to 548,618.15, 819,281.76 and 542,680.45 is: 810,414.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,618.15 : 819,281.76 = 542,680.45 : x
  2. Step 2: Convert to fraction form
    548,618.15/819,281.76 = 542,680.45/x
  3. Step 3: Cross multiply
    548,618.15x = 819,281.76 × 542,680.45
  4. Step 4: Simplify right side
    548,618.15x = 444,608,194,193.59
  5. Step 5: Solve for x
    x = 444,608,194,193.59/548,618.15
  6. Step 6: Final answer
    x = 810,414.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.