Home / 831,787.57-1,147,858.05-469,329.38

Finding the Fourth Proportional to 831,787.57, 1,147,858.05 and 469,329.38

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Solution

The fourth proportional to 831,787.57, 1,147,858.05 and 469,329.38 is: 647,669.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,787.57 : 1,147,858.05 = 469,329.38 : x
  2. Step 2: Convert to fraction form
    831,787.57/1,147,858.05 = 469,329.38/x
  3. Step 3: Cross multiply
    831,787.57x = 1,147,858.05 × 469,329.38
  4. Step 4: Simplify right side
    831,787.57x = 538,723,506,934.51
  5. Step 5: Solve for x
    x = 538,723,506,934.51/831,787.57
  6. Step 6: Final answer
    x = 647,669.58

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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.