Home / 1,390,453.86-1,917,835.04-1,276,101.12

Finding the Fourth Proportional to 1,390,453.86, 1,917,835.04 and 1,276,101.12

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Solution

The fourth proportional to 1,390,453.86, 1,917,835.04 and 1,276,101.12 is: 1,760,109.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,453.86 : 1,917,835.04 = 1,276,101.12 : x
  2. Step 2: Convert to fraction form
    1,390,453.86/1,917,835.04 = 1,276,101.12/x
  3. Step 3: Cross multiply
    1,390,453.86x = 1,917,835.04 × 1,276,101.12
  4. Step 4: Simplify right side
    1,390,453.86x = 2,447,351,442,519.25
  5. Step 5: Solve for x
    x = 2,447,351,442,519.25/1,390,453.86
  6. Step 6: Final answer
    x = 1,760,109.78

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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.