Home / 1,292,987.52-1,940,310.72-627,776.64

Finding the Fourth Proportional to 1,292,987.52, 1,940,310.72 and 627,776.64

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Solution

The fourth proportional to 1,292,987.52, 1,940,310.72 and 627,776.64 is: 942,067.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,987.52 : 1,940,310.72 = 627,776.64 : x
  2. Step 2: Convert to fraction form
    1,292,987.52/1,940,310.72 = 627,776.64/x
  3. Step 3: Cross multiply
    1,292,987.52x = 1,940,310.72 × 627,776.64
  4. Step 4: Simplify right side
    1,292,987.52x = 1,218,081,744,357.58
  5. Step 5: Solve for x
    x = 1,218,081,744,357.58/1,292,987.52
  6. Step 6: Final answer
    x = 942,067.67

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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.