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Finding the Fourth Proportional to 735,020.80, 1,102,660.80 and 261,980.80

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Solution

The fourth proportional to 735,020.80, 1,102,660.80 and 261,980.80 is: 393,017.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    735,020.80 : 1,102,660.80 = 261,980.80 : x
  2. Step 2: Convert to fraction form
    735,020.80/1,102,660.80 = 261,980.80/x
  3. Step 3: Cross multiply
    735,020.80x = 1,102,660.80 × 261,980.80
  4. Step 4: Simplify right side
    735,020.80x = 288,875,958,512.64
  5. Step 5: Solve for x
    x = 288,875,958,512.64/735,020.80
  6. Step 6: Final answer
    x = 393,017.39

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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.