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Finding the Fourth Proportional to 515,812.10, 773,718.15 and 326,855.30

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Solution

The fourth proportional to 515,812.10, 773,718.15 and 326,855.30 is: 490,282.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,812.10 : 773,718.15 = 326,855.30 : x
  2. Step 2: Convert to fraction form
    515,812.10/773,718.15 = 326,855.30/x
  3. Step 3: Cross multiply
    515,812.10x = 773,718.15 × 326,855.30
  4. Step 4: Simplify right side
    515,812.10x = 252,893,878,033.70
  5. Step 5: Solve for x
    x = 252,893,878,033.70/515,812.10
  6. Step 6: Final answer
    x = 490,282.95

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Similar ratio
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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.