Home / 420,749,049.60-580,622,550.49-235,111,590.72

Finding the Fourth Proportional to 420,749,049.60, 580,622,550.49 and 235,111,590.72

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Solution

The fourth proportional to 420,749,049.60, 580,622,550.49 and 235,111,590.72 is: 324,447,771.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,749,049.60 : 580,622,550.49 = 235,111,590.72 : x
  2. Step 2: Convert to fraction form
    420,749,049.60/580,622,550.49 = 235,111,590.72/x
  3. Step 3: Cross multiply
    420,749,049.60x = 580,622,550.49 × 235,111,590.72
  4. Step 4: Simplify right side
    420,749,049.60x = 136,511,091,453,607,424
  5. Step 5: Solve for x
    x = 136,511,091,453,607,424/420,749,049.60
  6. Step 6: Final answer
    x = 324,447,771.38

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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.