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Finding the Fourth Proportional to 805,219.76, 1,111,202.88 and 442,667

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Solution

The fourth proportional to 805,219.76, 1,111,202.88 and 442,667 is: 610,880.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,219.76 : 1,111,202.88 = 442,667 : x
  2. Step 2: Convert to fraction form
    805,219.76/1,111,202.88 = 442,667/x
  3. Step 3: Cross multiply
    805,219.76x = 1,111,202.88 × 442,667
  4. Step 4: Simplify right side
    805,219.76x = 491,892,845,280.96
  5. Step 5: Solve for x
    x = 491,892,845,280.96/805,219.76
  6. Step 6: Final answer
    x = 610,880.25

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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.