Home / 1,188,739.07-1,640,459.91-679,452.38

Finding the Fourth Proportional to 1,188,739.07, 1,640,459.91 and 679,452.38

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Solution

The fourth proportional to 1,188,739.07, 1,640,459.91 and 679,452.38 is: 937,644.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,739.07 : 1,640,459.91 = 679,452.38 : x
  2. Step 2: Convert to fraction form
    1,188,739.07/1,640,459.91 = 679,452.38/x
  3. Step 3: Cross multiply
    1,188,739.07x = 1,640,459.91 × 679,452.38
  4. Step 4: Simplify right side
    1,188,739.07x = 1,114,614,390,144.09
  5. Step 5: Solve for x
    x = 1,114,614,390,144.09/1,188,739.07
  6. Step 6: Final answer
    x = 937,644.28

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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.