Home / 691,260.30-1,036,890.45-192,624.30

Finding the Fourth Proportional to 691,260.30, 1,036,890.45 and 192,624.30

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Solution

The fourth proportional to 691,260.30, 1,036,890.45 and 192,624.30 is: 288,936.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,260.30 : 1,036,890.45 = 192,624.30 : x
  2. Step 2: Convert to fraction form
    691,260.30/1,036,890.45 = 192,624.30/x
  3. Step 3: Cross multiply
    691,260.30x = 1,036,890.45 × 192,624.30
  4. Step 4: Simplify right side
    691,260.30x = 199,730,297,107.94
  5. Step 5: Solve for x
    x = 199,730,297,107.94/691,260.30
  6. Step 6: Final answer
    x = 288,936.45

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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.