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Finding the Fourth Proportional to 657,998.40, 986,997.60 and 303,704.40

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Solution

The fourth proportional to 657,998.40, 986,997.60 and 303,704.40 is: 455,556.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,998.40 : 986,997.60 = 303,704.40 : x
  2. Step 2: Convert to fraction form
    657,998.40/986,997.60 = 303,704.40/x
  3. Step 3: Cross multiply
    657,998.40x = 986,997.60 × 303,704.40
  4. Step 4: Simplify right side
    657,998.40x = 299,755,513,909.44
  5. Step 5: Solve for x
    x = 299,755,513,909.44/657,998.40
  6. Step 6: Final answer
    x = 455,556.60

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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.