Home / 419,328,015.20-628,992,022.80-266,650,920.80

Finding the Fourth Proportional to 419,328,015.20, 628,992,022.80 and 266,650,920.80

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Solution

The fourth proportional to 419,328,015.20, 628,992,022.80 and 266,650,920.80 is: 399,976,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,328,015.20 : 628,992,022.80 = 266,650,920.80 : x
  2. Step 2: Convert to fraction form
    419,328,015.20/628,992,022.80 = 266,650,920.80/x
  3. Step 3: Cross multiply
    419,328,015.20x = 628,992,022.80 × 266,650,920.80
  4. Step 4: Simplify right side
    419,328,015.20x = 167,721,302,055,474,592
  5. Step 5: Solve for x
    x = 167,721,302,055,474,592/419,328,015.20
  6. Step 6: Final answer
    x = 399,976,381.20

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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.