Home / 686,389.82-1,028,972.37-349,241.90

Finding the Fourth Proportional to 686,389.82, 1,028,972.37 and 349,241.90

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Solution

The fourth proportional to 686,389.82, 1,028,972.37 and 349,241.90 is: 523,551.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,389.82 : 1,028,972.37 = 349,241.90 : x
  2. Step 2: Convert to fraction form
    686,389.82/1,028,972.37 = 349,241.90/x
  3. Step 3: Cross multiply
    686,389.82x = 1,028,972.37 × 349,241.90
  4. Step 4: Simplify right side
    686,389.82x = 359,360,265,546.30
  5. Step 5: Solve for x
    x = 359,360,265,546.30/686,389.82
  6. Step 6: Final answer
    x = 523,551.28

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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.