Home / 1,279,111.20-1,917,654.66-480,303.78

Finding the Fourth Proportional to 1,279,111.20, 1,917,654.66 and 480,303.78

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Solution

The fourth proportional to 1,279,111.20, 1,917,654.66 and 480,303.78 is: 720,075.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,111.20 : 1,917,654.66 = 480,303.78 : x
  2. Step 2: Convert to fraction form
    1,279,111.20/1,917,654.66 = 480,303.78/x
  3. Step 3: Cross multiply
    1,279,111.20x = 1,917,654.66 × 480,303.78
  4. Step 4: Simplify right side
    1,279,111.20x = 921,056,781,932.62
  5. Step 5: Solve for x
    x = 921,056,781,932.62/1,279,111.20
  6. Step 6: Final answer
    x = 720,075.61

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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.