Home / 1,188,397.83-1,639,984.23-644,531.43

Finding the Fourth Proportional to 1,188,397.83, 1,639,984.23 and 644,531.43

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Solution

The fourth proportional to 1,188,397.83, 1,639,984.23 and 644,531.43 is: 889,450.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,397.83 : 1,639,984.23 = 644,531.43 : x
  2. Step 2: Convert to fraction form
    1,188,397.83/1,639,984.23 = 644,531.43/x
  3. Step 3: Cross multiply
    1,188,397.83x = 1,639,984.23 × 644,531.43
  4. Step 4: Simplify right side
    1,188,397.83x = 1,057,021,380,939.35
  5. Step 5: Solve for x
    x = 1,057,021,380,939.35/1,188,397.83
  6. Step 6: Final answer
    x = 889,450.78

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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.