Home / 419,963.79-629,945.52-104,420.73

Finding the Fourth Proportional to 419,963.79, 629,945.52 and 104,420.73

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Solution

The fourth proportional to 419,963.79, 629,945.52 and 104,420.73 is: 156,631.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,963.79 : 629,945.52 = 104,420.73 : x
  2. Step 2: Convert to fraction form
    419,963.79/629,945.52 = 104,420.73/x
  3. Step 3: Cross multiply
    419,963.79x = 629,945.52 × 104,420.73
  4. Step 4: Simplify right side
    419,963.79x = 65,779,371,058.63
  5. Step 5: Solve for x
    x = 65,779,371,058.63/419,963.79
  6. Step 6: Final answer
    x = 156,631.05

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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.