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Finding the Fourth Proportional to 609,851.68, 914,168.55 and 407,618.12

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Solution

The fourth proportional to 609,851.68, 914,168.55 and 407,618.12 is: 611,020.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,851.68 : 914,168.55 = 407,618.12 : x
  2. Step 2: Convert to fraction form
    609,851.68/914,168.55 = 407,618.12/x
  3. Step 3: Cross multiply
    609,851.68x = 914,168.55 × 407,618.12
  4. Step 4: Simplify right side
    609,851.68x = 372,631,667,235.26
  5. Step 5: Solve for x
    x = 372,631,667,235.26/609,851.68
  6. Step 6: Final answer
    x = 611,020.15

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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.