Home / 1,368,128.38-1,887,556.86-885,304.38

Finding the Fourth Proportional to 1,368,128.38, 1,887,556.86 and 885,304.38

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Solution

The fourth proportional to 1,368,128.38, 1,887,556.86 and 885,304.38 is: 1,221,422.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,128.38 : 1,887,556.86 = 885,304.38 : x
  2. Step 2: Convert to fraction form
    1,368,128.38/1,887,556.86 = 885,304.38/x
  3. Step 3: Cross multiply
    1,368,128.38x = 1,887,556.86 × 885,304.38
  4. Step 4: Simplify right side
    1,368,128.38x = 1,671,062,355,657.05
  5. Step 5: Solve for x
    x = 1,671,062,355,657.05/1,368,128.38
  6. Step 6: Final answer
    x = 1,221,422.19

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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.