Home / 1,387,571.85-1,915,439.40-843,882.30

Finding the Fourth Proportional to 1,387,571.85, 1,915,439.40 and 843,882.30

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Solution

The fourth proportional to 1,387,571.85, 1,915,439.40 and 843,882.30 is: 1,164,916.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,571.85 : 1,915,439.40 = 843,882.30 : x
  2. Step 2: Convert to fraction form
    1,387,571.85/1,915,439.40 = 843,882.30/x
  3. Step 3: Cross multiply
    1,387,571.85x = 1,915,439.40 × 843,882.30
  4. Step 4: Simplify right side
    1,387,571.85x = 1,616,405,406,382.62
  5. Step 5: Solve for x
    x = 1,616,405,406,382.62/1,387,571.85
  6. Step 6: Final answer
    x = 1,164,916.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.