Home / 1,391,916-2,086,381.44-911,962.56

Finding the Fourth Proportional to 1,391,916, 2,086,381.44 and 911,962.56

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Solution

The fourth proportional to 1,391,916, 2,086,381.44 and 911,962.56 is: 1,366,965.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,916 : 2,086,381.44 = 911,962.56 : x
  2. Step 2: Convert to fraction form
    1,391,916/2,086,381.44 = 911,962.56/x
  3. Step 3: Cross multiply
    1,391,916x = 2,086,381.44 × 911,962.56
  4. Step 4: Simplify right side
    1,391,916x = 1,902,701,759,158.89
  5. Step 5: Solve for x
    x = 1,902,701,759,158.89/1,391,916
  6. Step 6: Final answer
    x = 1,366,965.94

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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.