Home / 1,029,664.72-1,421,629.32-643,067.92

Finding the Fourth Proportional to 1,029,664.72, 1,421,629.32 and 643,067.92

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Solution

The fourth proportional to 1,029,664.72, 1,421,629.32 and 643,067.92 is: 887,865.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029,664.72 : 1,421,629.32 = 643,067.92 : x
  2. Step 2: Convert to fraction form
    1,029,664.72/1,421,629.32 = 643,067.92/x
  3. Step 3: Cross multiply
    1,029,664.72x = 1,421,629.32 × 643,067.92
  4. Step 4: Simplify right side
    1,029,664.72x = 914,204,209,823.42
  5. Step 5: Solve for x
    x = 914,204,209,823.42/1,029,664.72
  6. Step 6: Final answer
    x = 887,865.92

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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.