Home / 427,921.38-641,882.07-112,377.78

Finding the Fourth Proportional to 427,921.38, 641,882.07 and 112,377.78

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Solution

The fourth proportional to 427,921.38, 641,882.07 and 112,377.78 is: 168,566.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,921.38 : 641,882.07 = 112,377.78 : x
  2. Step 2: Convert to fraction form
    427,921.38/641,882.07 = 112,377.78/x
  3. Step 3: Cross multiply
    427,921.38x = 641,882.07 × 112,377.78
  4. Step 4: Simplify right side
    427,921.38x = 72,133,282,048.40
  5. Step 5: Solve for x
    x = 72,133,282,048.40/427,921.38
  6. Step 6: Final answer
    x = 168,566.67

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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.