Home / 1,212,820.80-1,819,231.20-764,048.40

Finding the Fourth Proportional to 1,212,820.80, 1,819,231.20 and 764,048.40

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Solution

The fourth proportional to 1,212,820.80, 1,819,231.20 and 764,048.40 is: 1,146,072.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,820.80 : 1,819,231.20 = 764,048.40 : x
  2. Step 2: Convert to fraction form
    1,212,820.80/1,819,231.20 = 764,048.40/x
  3. Step 3: Cross multiply
    1,212,820.80x = 1,819,231.20 × 764,048.40
  4. Step 4: Simplify right side
    1,212,820.80x = 1,389,980,687,590.08
  5. Step 5: Solve for x
    x = 1,389,980,687,590.08/1,212,820.80
  6. Step 6: Final answer
    x = 1,146,072.60

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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.