Home / 1,213,881.40-1,819,266.90-1,080,134.20

Finding the Fourth Proportional to 1,213,881.40, 1,819,266.90 and 1,080,134.20

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Solution

The fourth proportional to 1,213,881.40, 1,819,266.90 and 1,080,134.20 is: 1,618,817.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,881.40 : 1,819,266.90 = 1,080,134.20 : x
  2. Step 2: Convert to fraction form
    1,213,881.40/1,819,266.90 = 1,080,134.20/x
  3. Step 3: Cross multiply
    1,213,881.40x = 1,819,266.90 × 1,080,134.20
  4. Step 4: Simplify right side
    1,213,881.40x = 1,965,052,397,617.98
  5. Step 5: Solve for x
    x = 1,965,052,397,617.98/1,213,881.40
  6. Step 6: Final answer
    x = 1,618,817.45

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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.