Home / 1,320,062.85-1,980,077.55-421,493.19

Finding the Fourth Proportional to 1,320,062.85, 1,980,077.55 and 421,493.19

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Solution

The fourth proportional to 1,320,062.85, 1,980,077.55 and 421,493.19 is: 632,234.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,062.85 : 1,980,077.55 = 421,493.19 : x
  2. Step 2: Convert to fraction form
    1,320,062.85/1,980,077.55 = 421,493.19/x
  3. Step 3: Cross multiply
    1,320,062.85x = 1,980,077.55 × 421,493.19
  4. Step 4: Simplify right side
    1,320,062.85x = 834,589,202,996.89
  5. Step 5: Solve for x
    x = 834,589,202,996.89/1,320,062.85
  6. Step 6: Final answer
    x = 632,234.44

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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.