Home / 419,921.10-629,881.65-313,632.90

Finding the Fourth Proportional to 419,921.10, 629,881.65 and 313,632.90

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Solution

The fourth proportional to 419,921.10, 629,881.65 and 313,632.90 is: 470,449.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,921.10 : 629,881.65 = 313,632.90 : x
  2. Step 2: Convert to fraction form
    419,921.10/629,881.65 = 313,632.90/x
  3. Step 3: Cross multiply
    419,921.10x = 629,881.65 × 313,632.90
  4. Step 4: Simplify right side
    419,921.10x = 197,551,608,546.29
  5. Step 5: Solve for x
    x = 197,551,608,546.29/419,921.10
  6. Step 6: Final answer
    x = 470,449.35

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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.