Home / 691,324.70-1,036,987.05-192,688.70

Finding the Fourth Proportional to 691,324.70, 1,036,987.05 and 192,688.70

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Solution

The fourth proportional to 691,324.70, 1,036,987.05 and 192,688.70 is: 289,033.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,324.70 : 1,036,987.05 = 192,688.70 : x
  2. Step 2: Convert to fraction form
    691,324.70/1,036,987.05 = 192,688.70/x
  3. Step 3: Cross multiply
    691,324.70x = 1,036,987.05 × 192,688.70
  4. Step 4: Simplify right side
    691,324.70x = 199,815,686,581.34
  5. Step 5: Solve for x
    x = 199,815,686,581.34/691,324.70
  6. Step 6: Final answer
    x = 289,033.05

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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.