Home / 2,115,496.80-3,173,792.40-917,142.30

Finding the Fourth Proportional to 2,115,496.80, 3,173,792.40 and 917,142.30

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Solution

The fourth proportional to 2,115,496.80, 3,173,792.40 and 917,142.30 is: 1,375,950.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,496.80 : 3,173,792.40 = 917,142.30 : x
  2. Step 2: Convert to fraction form
    2,115,496.80/3,173,792.40 = 917,142.30/x
  3. Step 3: Cross multiply
    2,115,496.80x = 3,173,792.40 × 917,142.30
  4. Step 4: Simplify right side
    2,115,496.80x = 2,910,819,261,458.52
  5. Step 5: Solve for x
    x = 2,910,819,261,458.52/2,115,496.80
  6. Step 6: Final answer
    x = 1,375,950.68

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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.