Home / 419,985.11-629,980.17-104,442.02

Finding the Fourth Proportional to 419,985.11, 629,980.17 and 104,442.02

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Solution

The fourth proportional to 419,985.11, 629,980.17 and 104,442.02 is: 156,663.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,985.11 : 629,980.17 = 104,442.02 : x
  2. Step 2: Convert to fraction form
    419,985.11/629,980.17 = 104,442.02/x
  3. Step 3: Cross multiply
    419,985.11x = 629,980.17 × 104,442.02
  4. Step 4: Simplify right side
    419,985.11x = 65,796,401,514.74
  5. Step 5: Solve for x
    x = 65,796,401,514.74/419,985.11
  6. Step 6: Final answer
    x = 156,663.65

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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.