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Finding the Fourth Proportional to 663,627.80, 995,441.70 and 308,523.80

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Solution

The fourth proportional to 663,627.80, 995,441.70 and 308,523.80 is: 462,785.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,627.80 : 995,441.70 = 308,523.80 : x
  2. Step 2: Convert to fraction form
    663,627.80/995,441.70 = 308,523.80/x
  3. Step 3: Cross multiply
    663,627.80x = 995,441.70 × 308,523.80
  4. Step 4: Simplify right side
    663,627.80x = 307,117,455,962.46
  5. Step 5: Solve for x
    x = 307,117,455,962.46/663,627.80
  6. Step 6: Final answer
    x = 462,785.70

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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.