Home / 1,120,222.74-1,545,845.94-636,720.78

Finding the Fourth Proportional to 1,120,222.74, 1,545,845.94 and 636,720.78

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Solution

The fourth proportional to 1,120,222.74, 1,545,845.94 and 636,720.78 is: 878,639.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,222.74 : 1,545,845.94 = 636,720.78 : x
  2. Step 2: Convert to fraction form
    1,120,222.74/1,545,845.94 = 636,720.78/x
  3. Step 3: Cross multiply
    1,120,222.74x = 1,545,845.94 × 636,720.78
  4. Step 4: Simplify right side
    1,120,222.74x = 984,272,232,676.63
  5. Step 5: Solve for x
    x = 984,272,232,676.63/1,120,222.74
  6. Step 6: Final answer
    x = 878,639.75

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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.