Home / 1,387,715.04-1,915,049.94-775,889.64

Finding the Fourth Proportional to 1,387,715.04, 1,915,049.94 and 775,889.64

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Solution

The fourth proportional to 1,387,715.04, 1,915,049.94 and 775,889.64 is: 1,070,729.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,715.04 : 1,915,049.94 = 775,889.64 : x
  2. Step 2: Convert to fraction form
    1,387,715.04/1,915,049.94 = 775,889.64/x
  3. Step 3: Cross multiply
    1,387,715.04x = 1,915,049.94 × 775,889.64
  4. Step 4: Simplify right side
    1,387,715.04x = 1,485,867,408,528.62
  5. Step 5: Solve for x
    x = 1,485,867,408,528.62/1,387,715.04
  6. Step 6: Final answer
    x = 1,070,729.48

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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.