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Finding the Fourth Proportional to 671,996.80, 1,007,995.20 and 656,444.80

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Solution

The fourth proportional to 671,996.80, 1,007,995.20 and 656,444.80 is: 984,667.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,996.80 : 1,007,995.20 = 656,444.80 : x
  2. Step 2: Convert to fraction form
    671,996.80/1,007,995.20 = 656,444.80/x
  3. Step 3: Cross multiply
    671,996.80x = 1,007,995.20 × 656,444.80
  4. Step 4: Simplify right side
    671,996.80x = 661,693,207,464.96
  5. Step 5: Solve for x
    x = 661,693,207,464.96/671,996.80
  6. Step 6: Final answer
    x = 984,667.20

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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.