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Finding the Fourth Proportional to 1,409,796.86, 1,945,467.32 and 765,203.18

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Solution

The fourth proportional to 1,409,796.86, 1,945,467.32 and 765,203.18 is: 1,055,951.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409,796.86 : 1,945,467.32 = 765,203.18 : x
  2. Step 2: Convert to fraction form
    1,409,796.86/1,945,467.32 = 765,203.18/x
  3. Step 3: Cross multiply
    1,409,796.86x = 1,945,467.32 × 765,203.18
  4. Step 4: Simplify right side
    1,409,796.86x = 1,488,677,766,296.73
  5. Step 5: Solve for x
    x = 1,488,677,766,296.73/1,409,796.86
  6. Step 6: Final answer
    x = 1,055,951.97

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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.