Home / 1,330,234.85-1,994,860.20-431,705.90

Finding the Fourth Proportional to 1,330,234.85, 1,994,860.20 and 431,705.90

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Solution

The fourth proportional to 1,330,234.85, 1,994,860.20 and 431,705.90 is: 647,399.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,234.85 : 1,994,860.20 = 431,705.90 : x
  2. Step 2: Convert to fraction form
    1,330,234.85/1,994,860.20 = 431,705.90/x
  3. Step 3: Cross multiply
    1,330,234.85x = 1,994,860.20 × 431,705.90
  4. Step 4: Simplify right side
    1,330,234.85x = 861,192,918,015.18
  5. Step 5: Solve for x
    x = 861,192,918,015.18/1,330,234.85
  6. Step 6: Final answer
    x = 647,399.16

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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.