Home / 1,272,618.96-1,908,522.71-419,531.61

Finding the Fourth Proportional to 1,272,618.96, 1,908,522.71 and 419,531.61

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Solution

The fourth proportional to 1,272,618.96, 1,908,522.71 and 419,531.61 is: 629,163.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,618.96 : 1,908,522.71 = 419,531.61 : x
  2. Step 2: Convert to fraction form
    1,272,618.96/1,908,522.71 = 419,531.61/x
  3. Step 3: Cross multiply
    1,272,618.96x = 1,908,522.71 × 419,531.61
  4. Step 4: Simplify right side
    1,272,618.96x = 800,685,605,247.86
  5. Step 5: Solve for x
    x = 800,685,605,247.86/1,272,618.96
  6. Step 6: Final answer
    x = 629,163.66

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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.