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Finding the Fourth Proportional to 800,645.12, 1,104,760.32 and 442,880

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Solution

The fourth proportional to 800,645.12, 1,104,760.32 and 442,880 is: 611,102.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,645.12 : 1,104,760.32 = 442,880 : x
  2. Step 2: Convert to fraction form
    800,645.12/1,104,760.32 = 442,880/x
  3. Step 3: Cross multiply
    800,645.12x = 1,104,760.32 × 442,880
  4. Step 4: Simplify right side
    800,645.12x = 489,276,250,521.60
  5. Step 5: Solve for x
    x = 489,276,250,521.60/800,645.12
  6. Step 6: Final answer
    x = 611,102.52

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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.