Home / 1,080,230.40-1,619,308.80-840,211.20

Finding the Fourth Proportional to 1,080,230.40, 1,619,308.80 and 840,211.20

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Solution

The fourth proportional to 1,080,230.40, 1,619,308.80 and 840,211.20 is: 1,259,510.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080,230.40 : 1,619,308.80 = 840,211.20 : x
  2. Step 2: Convert to fraction form
    1,080,230.40/1,619,308.80 = 840,211.20/x
  3. Step 3: Cross multiply
    1,080,230.40x = 1,619,308.80 × 840,211.20
  4. Step 4: Simplify right side
    1,080,230.40x = 1,360,561,390,018.56
  5. Step 5: Solve for x
    x = 1,360,561,390,018.56/1,080,230.40
  6. Step 6: Final answer
    x = 1,259,510.37

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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.