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Finding the Fourth Proportional to 404,421.80, 606,632.70 and 278,450.60

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Solution

The fourth proportional to 404,421.80, 606,632.70 and 278,450.60 is: 417,675.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,421.80 : 606,632.70 = 278,450.60 : x
  2. Step 2: Convert to fraction form
    404,421.80/606,632.70 = 278,450.60/x
  3. Step 3: Cross multiply
    404,421.80x = 606,632.70 × 278,450.60
  4. Step 4: Simplify right side
    404,421.80x = 168,917,239,294.62
  5. Step 5: Solve for x
    x = 168,917,239,294.62/404,421.80
  6. Step 6: Final answer
    x = 417,675.90

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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.