Home / 690,899.94-1,036,349.92-269,880.56

Finding the Fourth Proportional to 690,899.94, 1,036,349.92 and 269,880.56

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Solution

The fourth proportional to 690,899.94, 1,036,349.92 and 269,880.56 is: 404,820.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,899.94 : 1,036,349.92 = 269,880.56 : x
  2. Step 2: Convert to fraction form
    690,899.94/1,036,349.92 = 269,880.56/x
  3. Step 3: Cross multiply
    690,899.94x = 1,036,349.92 × 269,880.56
  4. Step 4: Simplify right side
    690,899.94x = 279,690,696,765.56
  5. Step 5: Solve for x
    x = 279,690,696,765.56/690,899.94
  6. Step 6: Final answer
    x = 404,820.84

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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.