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Finding the Fourth Proportional to 559,175.20, 838,762.80 and 515,872.60

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Solution

The fourth proportional to 559,175.20, 838,762.80 and 515,872.60 is: 773,808.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,175.20 : 838,762.80 = 515,872.60 : x
  2. Step 2: Convert to fraction form
    559,175.20/838,762.80 = 515,872.60/x
  3. Step 3: Cross multiply
    559,175.20x = 838,762.80 × 515,872.60
  4. Step 4: Simplify right side
    559,175.20x = 432,694,746,419.28
  5. Step 5: Solve for x
    x = 432,694,746,419.28/559,175.20
  6. Step 6: Final answer
    x = 773,808.90

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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.