Home / 1,422,572.86-1,965,067.59-1,138,126.78

Finding the Fourth Proportional to 1,422,572.86, 1,965,067.59 and 1,138,126.78

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Solution

The fourth proportional to 1,422,572.86, 1,965,067.59 and 1,138,126.78 is: 1,572,148.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,572.86 : 1,965,067.59 = 1,138,126.78 : x
  2. Step 2: Convert to fraction form
    1,422,572.86/1,965,067.59 = 1,138,126.78/x
  3. Step 3: Cross multiply
    1,422,572.86x = 1,965,067.59 × 1,138,126.78
  4. Step 4: Simplify right side
    1,422,572.86x = 2,236,496,048,689.06
  5. Step 5: Solve for x
    x = 2,236,496,048,689.06/1,422,572.86
  6. Step 6: Final answer
    x = 1,572,148.68

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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.