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Finding the Fourth Proportional to 576,028.20, 864,042.30 and 520,915.80

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Solution

The fourth proportional to 576,028.20, 864,042.30 and 520,915.80 is: 781,373.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,028.20 : 864,042.30 = 520,915.80 : x
  2. Step 2: Convert to fraction form
    576,028.20/864,042.30 = 520,915.80/x
  3. Step 3: Cross multiply
    576,028.20x = 864,042.30 × 520,915.80
  4. Step 4: Simplify right side
    576,028.20x = 450,093,285,938.34
  5. Step 5: Solve for x
    x = 450,093,285,938.34/576,028.20
  6. Step 6: Final answer
    x = 781,373.70

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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.