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Finding the Fourth Proportional to 1,372,764.30, 1,893,773.97 and 863,747.34

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Solution

The fourth proportional to 1,372,764.30, 1,893,773.97 and 863,747.34 is: 1,191,568.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372,764.30 : 1,893,773.97 = 863,747.34 : x
  2. Step 2: Convert to fraction form
    1,372,764.30/1,893,773.97 = 863,747.34/x
  3. Step 3: Cross multiply
    1,372,764.30x = 1,893,773.97 × 863,747.34
  4. Step 4: Simplify right side
    1,372,764.30x = 1,635,742,229,148.74
  5. Step 5: Solve for x
    x = 1,635,742,229,148.74/1,372,764.30
  6. Step 6: Final answer
    x = 1,191,568.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.