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Finding the Fourth Proportional to 828,751.55, 1,242,765.18 and 418,168.49

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Solution

The fourth proportional to 828,751.55, 1,242,765.18 and 418,168.49 is: 627,070.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,751.55 : 1,242,765.18 = 418,168.49 : x
  2. Step 2: Convert to fraction form
    828,751.55/1,242,765.18 = 418,168.49/x
  3. Step 3: Cross multiply
    828,751.55x = 1,242,765.18 × 418,168.49
  4. Step 4: Simplify right side
    828,751.55x = 519,685,232,531.35
  5. Step 5: Solve for x
    x = 519,685,232,531.35/828,751.55
  6. Step 6: Final answer
    x = 627,070.00

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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.