Home / 664,631.40-996,947.10-221,399.40

Finding the Fourth Proportional to 664,631.40, 996,947.10 and 221,399.40

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Solution

The fourth proportional to 664,631.40, 996,947.10 and 221,399.40 is: 332,099.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,631.40 : 996,947.10 = 221,399.40 : x
  2. Step 2: Convert to fraction form
    664,631.40/996,947.10 = 221,399.40/x
  3. Step 3: Cross multiply
    664,631.40x = 996,947.10 × 221,399.40
  4. Step 4: Simplify right side
    664,631.40x = 220,723,489,771.74
  5. Step 5: Solve for x
    x = 220,723,489,771.74/664,631.40
  6. Step 6: Final answer
    x = 332,099.10

Related Problems

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Half scale
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Double scale
Find fourth proportional to 664,632.40, 996,948.60 and 221,400.40
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.