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Finding the Fourth Proportional to 667,154.23, 920,673.27 and 361,230.83

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Solution

The fourth proportional to 667,154.23, 920,673.27 and 361,230.83 is: 498,498.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,154.23 : 920,673.27 = 361,230.83 : x
  2. Step 2: Convert to fraction form
    667,154.23/920,673.27 = 361,230.83/x
  3. Step 3: Cross multiply
    667,154.23x = 920,673.27 × 361,230.83
  4. Step 4: Simplify right side
    667,154.23x = 332,575,568,559.32
  5. Step 5: Solve for x
    x = 332,575,568,559.32/667,154.23
  6. Step 6: Final answer
    x = 498,498.77

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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.