Home / 808,791.40-1,213,964.70-409,882.60

Finding the Fourth Proportional to 808,791.40, 1,213,964.70 and 409,882.60

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Solution

The fourth proportional to 808,791.40, 1,213,964.70 and 409,882.60 is: 615,217.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,791.40 : 1,213,964.70 = 409,882.60 : x
  2. Step 2: Convert to fraction form
    808,791.40/1,213,964.70 = 409,882.60/x
  3. Step 3: Cross multiply
    808,791.40x = 1,213,964.70 × 409,882.60
  4. Step 4: Simplify right side
    808,791.40x = 497,583,007,544.22
  5. Step 5: Solve for x
    x = 497,583,007,544.22/808,791.40
  6. Step 6: Final answer
    x = 615,217.98

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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.