Home / 1,391,832.05-2,086,255.44-911,878.49

Finding the Fourth Proportional to 1,391,832.05, 2,086,255.44 and 911,878.49

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Solution

The fourth proportional to 1,391,832.05, 2,086,255.44 and 911,878.49 is: 1,366,839.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,832.05 : 2,086,255.44 = 911,878.49 : x
  2. Step 2: Convert to fraction form
    1,391,832.05/2,086,255.44 = 911,878.49/x
  3. Step 3: Cross multiply
    1,391,832.05x = 2,086,255.44 × 911,878.49
  4. Step 4: Simplify right side
    1,391,832.05x = 1,902,411,465,597.12
  5. Step 5: Solve for x
    x = 1,902,411,465,597.12/1,391,832.05
  6. Step 6: Final answer
    x = 1,366,839.82

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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.