Home / 869,408.20-1,304,112.30-629,907.40

Finding the Fourth Proportional to 869,408.20, 1,304,112.30 and 629,907.40

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Solution

The fourth proportional to 869,408.20, 1,304,112.30 and 629,907.40 is: 944,861.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,408.20 : 1,304,112.30 = 629,907.40 : x
  2. Step 2: Convert to fraction form
    869,408.20/1,304,112.30 = 629,907.40/x
  3. Step 3: Cross multiply
    869,408.20x = 1,304,112.30 × 629,907.40
  4. Step 4: Simplify right side
    869,408.20x = 821,469,988,201.02
  5. Step 5: Solve for x
    x = 821,469,988,201.02/869,408.20
  6. Step 6: Final answer
    x = 944,861.10

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1.5x scale

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.