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Finding the Fourth Proportional to 800,855.80, 1,105,166.22 and 438,272.34

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Solution

The fourth proportional to 800,855.80, 1,105,166.22 and 438,272.34 is: 604,807.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,855.80 : 1,105,166.22 = 438,272.34 : x
  2. Step 2: Convert to fraction form
    800,855.80/1,105,166.22 = 438,272.34/x
  3. Step 3: Cross multiply
    800,855.80x = 1,105,166.22 × 438,272.34
  4. Step 4: Simplify right side
    800,855.80x = 484,363,785,328.36
  5. Step 5: Solve for x
    x = 484,363,785,328.36/800,855.80
  6. Step 6: Final answer
    x = 604,807.74

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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.