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Finding the Fourth Proportional to 662,728.40, 994,092.60 and 189,429.20

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Solution

The fourth proportional to 662,728.40, 994,092.60 and 189,429.20 is: 284,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,728.40 : 994,092.60 = 189,429.20 : x
  2. Step 2: Convert to fraction form
    662,728.40/994,092.60 = 189,429.20/x
  3. Step 3: Cross multiply
    662,728.40x = 994,092.60 × 189,429.20
  4. Step 4: Simplify right side
    662,728.40x = 188,310,165,943.92
  5. Step 5: Solve for x
    x = 188,310,165,943.92/662,728.40
  6. Step 6: Final answer
    x = 284,143.80

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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.