Home / 1,187,003.86-1,638,145.70-670,578.64

Finding the Fourth Proportional to 1,187,003.86, 1,638,145.70 and 670,578.64

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Solution

The fourth proportional to 1,187,003.86, 1,638,145.70 and 670,578.64 is: 925,443.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,003.86 : 1,638,145.70 = 670,578.64 : x
  2. Step 2: Convert to fraction form
    1,187,003.86/1,638,145.70 = 670,578.64/x
  3. Step 3: Cross multiply
    1,187,003.86x = 1,638,145.70 × 670,578.64
  4. Step 4: Simplify right side
    1,187,003.86x = 1,098,505,515,627.85
  5. Step 5: Solve for x
    x = 1,098,505,515,627.85/1,187,003.86
  6. Step 6: Final answer
    x = 925,443.93

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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.