Home / 831,836.09-1,147,986.96-469,127.60

Finding the Fourth Proportional to 831,836.09, 1,147,986.96 and 469,127.60

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Solution

The fourth proportional to 831,836.09, 1,147,986.96 and 469,127.60 is: 647,426.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,836.09 : 1,147,986.96 = 469,127.60 : x
  2. Step 2: Convert to fraction form
    831,836.09/1,147,986.96 = 469,127.60/x
  3. Step 3: Cross multiply
    831,836.09x = 1,147,986.96 × 469,127.60
  4. Step 4: Simplify right side
    831,836.09x = 538,552,370,639.31
  5. Step 5: Solve for x
    x = 538,552,370,639.31/831,836.09
  6. Step 6: Final answer
    x = 647,426.07

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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.