Home / 690,774.30-1,036,161.45-192,138.30

Finding the Fourth Proportional to 690,774.30, 1,036,161.45 and 192,138.30

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Solution

The fourth proportional to 690,774.30, 1,036,161.45 and 192,138.30 is: 288,207.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,774.30 : 1,036,161.45 = 192,138.30 : x
  2. Step 2: Convert to fraction form
    690,774.30/1,036,161.45 = 192,138.30/x
  3. Step 3: Cross multiply
    690,774.30x = 1,036,161.45 × 192,138.30
  4. Step 4: Simplify right side
    690,774.30x = 199,086,299,528.54
  5. Step 5: Solve for x
    x = 199,086,299,528.54/690,774.30
  6. Step 6: Final answer
    x = 288,207.45

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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.