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Finding the Fourth Proportional to 800,782.73, 1,105,080.09 and 438,206.66

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Solution

The fourth proportional to 800,782.73, 1,105,080.09 and 438,206.66 is: 604,725.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,782.73 : 1,105,080.09 = 438,206.66 : x
  2. Step 2: Convert to fraction form
    800,782.73/1,105,080.09 = 438,206.66/x
  3. Step 3: Cross multiply
    800,782.73x = 1,105,080.09 × 438,206.66
  4. Step 4: Simplify right side
    800,782.73x = 484,253,455,271.40
  5. Step 5: Solve for x
    x = 484,253,455,271.40/800,782.73
  6. Step 6: Final answer
    x = 604,725.15

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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.