Home / 1,036,253,718.97-1,555,079,972.28-405,907,589.73

Finding the Fourth Proportional to 1,036,253,718.97, 1,555,079,972.28 and 405,907,589.73

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Solution

The fourth proportional to 1,036,253,718.97, 1,555,079,972.28 and 405,907,589.73 is: 609,135,341.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036,253,718.97 : 1,555,079,972.28 = 405,907,589.73 : x
  2. Step 2: Convert to fraction form
    1,036,253,718.97/1,555,079,972.28 = 405,907,589.73/x
  3. Step 3: Cross multiply
    1,036,253,718.97x = 1,555,079,972.28 × 405,907,589.73
  4. Step 4: Simplify right side
    1,036,253,718.97x = 631,218,763,385,570,048
  5. Step 5: Solve for x
    x = 631,218,763,385,570,048/1,036,253,718.97
  6. Step 6: Final answer
    x = 609,135,341.89

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Double scale
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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.