Home / 419,959.20-629,938.80-262,495.20

Finding the Fourth Proportional to 419,959.20, 629,938.80 and 262,495.20

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Solution

The fourth proportional to 419,959.20, 629,938.80 and 262,495.20 is: 393,742.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,959.20 : 629,938.80 = 262,495.20 : x
  2. Step 2: Convert to fraction form
    419,959.20/629,938.80 = 262,495.20/x
  3. Step 3: Cross multiply
    419,959.20x = 629,938.80 × 262,495.20
  4. Step 4: Simplify right side
    419,959.20x = 165,355,911,293.76
  5. Step 5: Solve for x
    x = 165,355,911,293.76/419,959.20
  6. Step 6: Final answer
    x = 393,742.80

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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.