Home / 1,213,561.20-1,821,839.40-764,281.20

Finding the Fourth Proportional to 1,213,561.20, 1,821,839.40 and 764,281.20

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Solution

The fourth proportional to 1,213,561.20, 1,821,839.40 and 764,281.20 is: 1,147,364.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,561.20 : 1,821,839.40 = 764,281.20 : x
  2. Step 2: Convert to fraction form
    1,213,561.20/1,821,839.40 = 764,281.20/x
  3. Step 3: Cross multiply
    1,213,561.20x = 1,821,839.40 × 764,281.20
  4. Step 4: Simplify right side
    1,213,561.20x = 1,392,397,602,839.28
  5. Step 5: Solve for x
    x = 1,392,397,602,839.28/1,213,561.20
  6. Step 6: Final answer
    x = 1,147,364.96

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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.