Home / 831,447.15-1,147,398.75-449,473.92

Finding the Fourth Proportional to 831,447.15, 1,147,398.75 and 449,473.92

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Solution

The fourth proportional to 831,447.15, 1,147,398.75 and 449,473.92 is: 620,274.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,447.15 : 1,147,398.75 = 449,473.92 : x
  2. Step 2: Convert to fraction form
    831,447.15/1,147,398.75 = 449,473.92/x
  3. Step 3: Cross multiply
    831,447.15x = 1,147,398.75 × 449,473.92
  4. Step 4: Simplify right side
    831,447.15x = 515,725,813,965.60
  5. Step 5: Solve for x
    x = 515,725,813,965.60/831,447.15
  6. Step 6: Final answer
    x = 620,274.92

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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.