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Finding the Fourth Proportional to 663,563.80, 995,345.70 and 243,003.70

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Solution

The fourth proportional to 663,563.80, 995,345.70 and 243,003.70 is: 364,505.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,563.80 : 995,345.70 = 243,003.70 : x
  2. Step 2: Convert to fraction form
    663,563.80/995,345.70 = 243,003.70/x
  3. Step 3: Cross multiply
    663,563.80x = 995,345.70 × 243,003.70
  4. Step 4: Simplify right side
    663,563.80x = 241,872,687,879.09
  5. Step 5: Solve for x
    x = 241,872,687,879.09/663,563.80
  6. Step 6: Final answer
    x = 364,505.55

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Double scale
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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.