Home / 1,213,908.80-1,821,964.80-615,286.40

Finding the Fourth Proportional to 1,213,908.80, 1,821,964.80 and 615,286.40

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Solution

The fourth proportional to 1,213,908.80, 1,821,964.80 and 615,286.40 is: 923,487.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,908.80 : 1,821,964.80 = 615,286.40 : x
  2. Step 2: Convert to fraction form
    1,213,908.80/1,821,964.80 = 615,286.40/x
  3. Step 3: Cross multiply
    1,213,908.80x = 1,821,964.80 × 615,286.40
  4. Step 4: Simplify right side
    1,213,908.80x = 1,121,030,162,718.72
  5. Step 5: Solve for x
    x = 1,121,030,162,718.72/1,213,908.80
  6. Step 6: Final answer
    x = 923,487.96

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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.