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Finding the Fourth Proportional to 515,837.10, 773,755.65 and 326,880.30

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Solution

The fourth proportional to 515,837.10, 773,755.65 and 326,880.30 is: 490,320.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,837.10 : 773,755.65 = 326,880.30 : x
  2. Step 2: Convert to fraction form
    515,837.10/773,755.65 = 326,880.30/x
  3. Step 3: Cross multiply
    515,837.10x = 773,755.65 × 326,880.30
  4. Step 4: Simplify right side
    515,837.10x = 252,925,478,998.70
  5. Step 5: Solve for x
    x = 252,925,478,998.70/515,837.10
  6. Step 6: Final answer
    x = 490,320.45

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Similar ratio
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1.5x scale

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.