Home / 419,907,869.40-629,861,804.10-256,649,194.20

Finding the Fourth Proportional to 419,907,869.40, 629,861,804.10 and 256,649,194.20

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Solution

The fourth proportional to 419,907,869.40, 629,861,804.10 and 256,649,194.20 is: 384,973,791.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,907,869.40 : 629,861,804.10 = 256,649,194.20 : x
  2. Step 2: Convert to fraction form
    419,907,869.40/629,861,804.10 = 256,649,194.20/x
  3. Step 3: Cross multiply
    419,907,869.40x = 629,861,804.10 × 256,649,194.20
  4. Step 4: Simplify right side
    419,907,869.40x = 161,653,524,479,623,264
  5. Step 5: Solve for x
    x = 161,653,524,479,623,264/419,907,869.40
  6. Step 6: Final answer
    x = 384,973,791.30

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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.