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Finding the Fourth Proportional to 479,555.36, 661,786.45 and 264,695.48

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Solution

The fourth proportional to 479,555.36, 661,786.45 and 264,695.48 is: 365,279.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,555.36 : 661,786.45 = 264,695.48 : x
  2. Step 2: Convert to fraction form
    479,555.36/661,786.45 = 264,695.48/x
  3. Step 3: Cross multiply
    479,555.36x = 661,786.45 × 264,695.48
  4. Step 4: Simplify right side
    479,555.36x = 175,171,878,069.58
  5. Step 5: Solve for x
    x = 175,171,878,069.58/479,555.36
  6. Step 6: Final answer
    x = 365,279.79

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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.