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Finding the Fourth Proportional to 800,857.98, 1,105,169.22 and 438,274.56

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Solution

The fourth proportional to 800,857.98, 1,105,169.22 and 438,274.56 is: 604,810.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,857.98 : 1,105,169.22 = 438,274.56 : x
  2. Step 2: Convert to fraction form
    800,857.98/1,105,169.22 = 438,274.56/x
  3. Step 3: Cross multiply
    800,857.98x = 1,105,169.22 × 438,274.56
  4. Step 4: Simplify right side
    800,857.98x = 484,367,553,621.04
  5. Step 5: Solve for x
    x = 484,367,553,621.04/800,857.98
  6. Step 6: Final answer
    x = 604,810.80

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1.5x scale

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.