Home / 1,325,546.20-1,986,278.10-986,998.60

Finding the Fourth Proportional to 1,325,546.20, 1,986,278.10 and 986,998.60

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Solution

The fourth proportional to 1,325,546.20, 1,986,278.10 and 986,998.60 is: 1,478,978.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,546.20 : 1,986,278.10 = 986,998.60 : x
  2. Step 2: Convert to fraction form
    1,325,546.20/1,986,278.10 = 986,998.60/x
  3. Step 3: Cross multiply
    1,325,546.20x = 1,986,278.10 × 986,998.60
  4. Step 4: Simplify right side
    1,325,546.20x = 1,960,453,703,910.66
  5. Step 5: Solve for x
    x = 1,960,453,703,910.66/1,325,546.20
  6. Step 6: Final answer
    x = 1,478,978.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.