Home / 812,355,053.12-1,218,707,389.32-252,105,817.49

Finding the Fourth Proportional to 812,355,053.12, 1,218,707,389.32 and 252,105,817.49

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Solution

The fourth proportional to 812,355,053.12, 1,218,707,389.32 and 252,105,817.49 is: 378,212,976.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,355,053.12 : 1,218,707,389.32 = 252,105,817.49 : x
  2. Step 2: Convert to fraction form
    812,355,053.12/1,218,707,389.32 = 252,105,817.49/x
  3. Step 3: Cross multiply
    812,355,053.12x = 1,218,707,389.32 × 252,105,817.49
  4. Step 4: Simplify right side
    812,355,053.12x = 307,243,222,665,622,272
  5. Step 5: Solve for x
    x = 307,243,222,665,622,272/812,355,053.12
  6. Step 6: Final answer
    x = 378,212,976.56

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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.