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Finding the Fourth Proportional to 831,696.84, 1,147,740.82 and 449,722.71

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Solution

The fourth proportional to 831,696.84, 1,147,740.82 and 449,722.71 is: 620,616.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,696.84 : 1,147,740.82 = 449,722.71 : x
  2. Step 2: Convert to fraction form
    831,696.84/1,147,740.82 = 449,722.71/x
  3. Step 3: Cross multiply
    831,696.84x = 1,147,740.82 × 449,722.71
  4. Step 4: Simplify right side
    831,696.84x = 516,165,110,823.72
  5. Step 5: Solve for x
    x = 516,165,110,823.72/831,696.84
  6. Step 6: Final answer
    x = 620,616.90

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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.