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Finding the Fourth Proportional to 3,394,039.40, 5,090,943.90 and 869,719.40

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Solution

The fourth proportional to 3,394,039.40, 5,090,943.90 and 869,719.40 is: 1,304,549.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,394,039.40 : 5,090,943.90 = 869,719.40 : x
  2. Step 2: Convert to fraction form
    3,394,039.40/5,090,943.90 = 869,719.40/x
  3. Step 3: Cross multiply
    3,394,039.40x = 5,090,943.90 × 869,719.40
  4. Step 4: Simplify right side
    3,394,039.40x = 4,427,692,674,141.66
  5. Step 5: Solve for x
    x = 4,427,692,674,141.66/3,394,039.40
  6. Step 6: Final answer
    x = 1,304,549.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.