Home / 1,388,537.46-1,915,633.89-871,987.50

Finding the Fourth Proportional to 1,388,537.46, 1,915,633.89 and 871,987.50

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Solution

The fourth proportional to 1,388,537.46, 1,915,633.89 and 871,987.50 is: 1,202,998.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,537.46 : 1,915,633.89 = 871,987.50 : x
  2. Step 2: Convert to fraction form
    1,388,537.46/1,915,633.89 = 871,987.50/x
  3. Step 3: Cross multiply
    1,388,537.46x = 1,915,633.89 × 871,987.50
  4. Step 4: Simplify right side
    1,388,537.46x = 1,670,408,806,656.38
  5. Step 5: Solve for x
    x = 1,670,408,806,656.38/1,388,537.46
  6. Step 6: Final answer
    x = 1,202,998.73

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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.