Home / 728,648.44-1,085,646.64-687,904.62

Finding the Fourth Proportional to 728,648.44, 1,085,646.64 and 687,904.62

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Solution

The fourth proportional to 728,648.44, 1,085,646.64 and 687,904.62 is: 1,024,940.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,648.44 : 1,085,646.64 = 687,904.62 : x
  2. Step 2: Convert to fraction form
    728,648.44/1,085,646.64 = 687,904.62/x
  3. Step 3: Cross multiply
    728,648.44x = 1,085,646.64 × 687,904.62
  4. Step 4: Simplify right side
    728,648.44x = 746,821,339,343.48
  5. Step 5: Solve for x
    x = 746,821,339,343.48/728,648.44
  6. Step 6: Final answer
    x = 1,024,940.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.