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Finding the Fourth Proportional to 577,042.10, 865,563.15 and 311,321.60

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Solution

The fourth proportional to 577,042.10, 865,563.15 and 311,321.60 is: 466,982.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,042.10 : 865,563.15 = 311,321.60 : x
  2. Step 2: Convert to fraction form
    577,042.10/865,563.15 = 311,321.60/x
  3. Step 3: Cross multiply
    577,042.10x = 865,563.15 × 311,321.60
  4. Step 4: Simplify right side
    577,042.10x = 269,468,504,759.04
  5. Step 5: Solve for x
    x = 269,468,504,759.04/577,042.10
  6. Step 6: Final answer
    x = 466,982.40

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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.