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Finding the Fourth Proportional to 911,867.21, 1,367,798.97 and 856,377.30

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Solution

The fourth proportional to 911,867.21, 1,367,798.97 and 856,377.30 is: 1,284,564.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,867.21 : 1,367,798.97 = 856,377.30 : x
  2. Step 2: Convert to fraction form
    911,867.21/1,367,798.97 = 856,377.30/x
  3. Step 3: Cross multiply
    911,867.21x = 1,367,798.97 × 856,377.30
  4. Step 4: Simplify right side
    911,867.21x = 1,171,351,988,871.38
  5. Step 5: Solve for x
    x = 1,171,351,988,871.38/911,867.21
  6. Step 6: Final answer
    x = 1,284,564.22

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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.