Home / 1,187,015.12-1,638,161.22-670,589.90

Finding the Fourth Proportional to 1,187,015.12, 1,638,161.22 and 670,589.90

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Solution

The fourth proportional to 1,187,015.12, 1,638,161.22 and 670,589.90 is: 925,459.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,015.12 : 1,638,161.22 = 670,589.90 : x
  2. Step 2: Convert to fraction form
    1,187,015.12/1,638,161.22 = 670,589.90/x
  3. Step 3: Cross multiply
    1,187,015.12x = 1,638,161.22 × 670,589.90
  4. Step 4: Simplify right side
    1,187,015.12x = 1,098,534,368,703.68
  5. Step 5: Solve for x
    x = 1,098,534,368,703.68/1,187,015.12
  6. Step 6: Final answer
    x = 925,459.46

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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.