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Finding the Fourth Proportional to 667,154.80, 920,666.72 and 361,225.92

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Solution

The fourth proportional to 667,154.80, 920,666.72 and 361,225.92 is: 498,488.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,154.80 : 920,666.72 = 361,225.92 : x
  2. Step 2: Convert to fraction form
    667,154.80/920,666.72 = 361,225.92/x
  3. Step 3: Cross multiply
    667,154.80x = 920,666.72 × 361,225.92
  4. Step 4: Simplify right side
    667,154.80x = 332,568,682,945.38
  5. Step 5: Solve for x
    x = 332,568,682,945.38/667,154.80
  6. Step 6: Final answer
    x = 498,488.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.