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Finding the Fourth Proportional to 806,976, 1,113,626.88 and 449,364.48

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Solution

The fourth proportional to 806,976, 1,113,626.88 and 449,364.48 is: 620,122.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,976 : 1,113,626.88 = 449,364.48 : x
  2. Step 2: Convert to fraction form
    806,976/1,113,626.88 = 449,364.48/x
  3. Step 3: Cross multiply
    806,976x = 1,113,626.88 × 449,364.48
  4. Step 4: Simplify right side
    806,976x = 500,424,363,845.22
  5. Step 5: Solve for x
    x = 500,424,363,845.22/806,976
  6. Step 6: Final answer
    x = 620,122.98

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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.