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Finding the Fourth Proportional to 544,610.20, 816,915.30 and 520,115.80

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Solution

The fourth proportional to 544,610.20, 816,915.30 and 520,115.80 is: 780,173.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,610.20 : 816,915.30 = 520,115.80 : x
  2. Step 2: Convert to fraction form
    544,610.20/816,915.30 = 520,115.80/x
  3. Step 3: Cross multiply
    544,610.20x = 816,915.30 × 520,115.80
  4. Step 4: Simplify right side
    544,610.20x = 424,890,554,791.74
  5. Step 5: Solve for x
    x = 424,890,554,791.74/544,610.20
  6. Step 6: Final answer
    x = 780,173.70

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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.