Home / 420,749,168.78-580,622,714.97-235,111,709.90

Finding the Fourth Proportional to 420,749,168.78, 580,622,714.97 and 235,111,709.90

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Solution

The fourth proportional to 420,749,168.78, 580,622,714.97 and 235,111,709.90 is: 324,447,935.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,749,168.78 : 580,622,714.97 = 235,111,709.90 : x
  2. Step 2: Convert to fraction form
    420,749,168.78/580,622,714.97 = 235,111,709.90/x
  3. Step 3: Cross multiply
    420,749,168.78x = 580,622,714.97 × 235,111,709.90
  4. Step 4: Simplify right side
    420,749,168.78x = 136,511,199,323,946,896
  5. Step 5: Solve for x
    x = 136,511,199,323,946,896/420,749,168.78
  6. Step 6: Final answer
    x = 324,447,935.85

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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.