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Finding the Fourth Proportional to 1,911,808.62, 2,867,713.02 and 713,824.38

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Solution

The fourth proportional to 1,911,808.62, 2,867,713.02 and 713,824.38 is: 1,070,736.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911,808.62 : 2,867,713.02 = 713,824.38 : x
  2. Step 2: Convert to fraction form
    1,911,808.62/2,867,713.02 = 713,824.38/x
  3. Step 3: Cross multiply
    1,911,808.62x = 2,867,713.02 × 713,824.38
  4. Step 4: Simplify right side
    1,911,808.62x = 2,047,043,468,519.43
  5. Step 5: Solve for x
    x = 2,047,043,468,519.43/1,911,808.62
  6. Step 6: Final answer
    x = 1,070,736.60

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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.