Home / 1,213,221.40-1,819,659.30-414,539.80

Finding the Fourth Proportional to 1,213,221.40, 1,819,659.30 and 414,539.80

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Solution

The fourth proportional to 1,213,221.40, 1,819,659.30 and 414,539.80 is: 621,750.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,221.40 : 1,819,659.30 = 414,539.80 : x
  2. Step 2: Convert to fraction form
    1,213,221.40/1,819,659.30 = 414,539.80/x
  3. Step 3: Cross multiply
    1,213,221.40x = 1,819,659.30 × 414,539.80
  4. Step 4: Simplify right side
    1,213,221.40x = 754,321,202,290.14
  5. Step 5: Solve for x
    x = 754,321,202,290.14/1,213,221.40
  6. Step 6: Final answer
    x = 621,750.66

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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.