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Finding the Fourth Proportional to 622,660.80, 933,991.20 and 307,732.80

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Solution

The fourth proportional to 622,660.80, 933,991.20 and 307,732.80 is: 461,599.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,660.80 : 933,991.20 = 307,732.80 : x
  2. Step 2: Convert to fraction form
    622,660.80/933,991.20 = 307,732.80/x
  3. Step 3: Cross multiply
    622,660.80x = 933,991.20 × 307,732.80
  4. Step 4: Simplify right side
    622,660.80x = 287,419,727,151.36
  5. Step 5: Solve for x
    x = 287,419,727,151.36/622,660.80
  6. Step 6: Final answer
    x = 461,599.20

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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.