Home / 420,749,172.72-580,622,720.40-235,111,713.84

Finding the Fourth Proportional to 420,749,172.72, 580,622,720.40 and 235,111,713.84

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Solution

The fourth proportional to 420,749,172.72, 580,622,720.40 and 235,111,713.84 is: 324,447,941.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,749,172.72 : 580,622,720.40 = 235,111,713.84 : x
  2. Step 2: Convert to fraction form
    420,749,172.72/580,622,720.40 = 235,111,713.84/x
  3. Step 3: Cross multiply
    420,749,172.72x = 580,622,720.40 × 235,111,713.84
  4. Step 4: Simplify right side
    420,749,172.72x = 136,511,202,887,687,120
  5. Step 5: Solve for x
    x = 136,511,202,887,687,120/420,749,172.72
  6. Step 6: Final answer
    x = 324,447,941.29

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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.