Home / 421,800,617.90-632,703,028.82-172,941,806.59

Finding the Fourth Proportional to 421,800,617.90, 632,703,028.82 and 172,941,806.59

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Solution

The fourth proportional to 421,800,617.90, 632,703,028.82 and 172,941,806.59 is: 259,413,571.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,800,617.90 : 632,703,028.82 = 172,941,806.59 : x
  2. Step 2: Convert to fraction form
    421,800,617.90/632,703,028.82 = 172,941,806.59/x
  3. Step 3: Cross multiply
    421,800,617.90x = 632,703,028.82 × 172,941,806.59
  4. Step 4: Simplify right side
    421,800,617.90x = 109,420,804,836,649,184
  5. Step 5: Solve for x
    x = 109,420,804,836,649,184/421,800,617.90
  6. Step 6: Final answer
    x = 259,413,571.70

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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.