Home / 1,213,628.20-1,821,939.90-764,348.20

Finding the Fourth Proportional to 1,213,628.20, 1,821,939.90 and 764,348.20

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Solution

The fourth proportional to 1,213,628.20, 1,821,939.90 and 764,348.20 is: 1,147,465.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,628.20 : 1,821,939.90 = 764,348.20 : x
  2. Step 2: Convert to fraction form
    1,213,628.20/1,821,939.90 = 764,348.20/x
  3. Step 3: Cross multiply
    1,213,628.20x = 1,821,939.90 × 764,348.20
  4. Step 4: Simplify right side
    1,213,628.20x = 1,392,596,483,073.18
  5. Step 5: Solve for x
    x = 1,392,596,483,073.18/1,213,628.20
  6. Step 6: Final answer
    x = 1,147,465.49

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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.