Home / 405,261,780-559,261,734.75-219,622,795.68

Finding the Fourth Proportional to 405,261,780, 559,261,734.75 and 219,622,795.68

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Solution

The fourth proportional to 405,261,780, 559,261,734.75 and 219,622,795.68 is: 303,079,717.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,261,780 : 559,261,734.75 = 219,622,795.68 : x
  2. Step 2: Convert to fraction form
    405,261,780/559,261,734.75 = 219,622,795.68/x
  3. Step 3: Cross multiply
    405,261,780x = 559,261,734.75 × 219,622,795.68
  4. Step 4: Simplify right side
    405,261,780x = 122,826,625,702,641,616
  5. Step 5: Solve for x
    x = 122,826,625,702,641,616/405,261,780
  6. Step 6: Final answer
    x = 303,079,717.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.