Home / 769,743.50-1,062,212.62-420,877.52

Finding the Fourth Proportional to 769,743.50, 1,062,212.62 and 420,877.52

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Solution

The fourth proportional to 769,743.50, 1,062,212.62 and 420,877.52 is: 580,792.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,743.50 : 1,062,212.62 = 420,877.52 : x
  2. Step 2: Convert to fraction form
    769,743.50/1,062,212.62 = 420,877.52/x
  3. Step 3: Cross multiply
    769,743.50x = 1,062,212.62 × 420,877.52
  4. Step 4: Simplify right side
    769,743.50x = 447,061,405,802.85
  5. Step 5: Solve for x
    x = 447,061,405,802.85/769,743.50
  6. Step 6: Final answer
    x = 580,792.70

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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.