Home / 1,121,190.80-1,680,786.30-411,053.36

Finding the Fourth Proportional to 1,121,190.80, 1,680,786.30 and 411,053.36

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Solution

The fourth proportional to 1,121,190.80, 1,680,786.30 and 411,053.36 is: 616,213.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,190.80 : 1,680,786.30 = 411,053.36 : x
  2. Step 2: Convert to fraction form
    1,121,190.80/1,680,786.30 = 411,053.36/x
  3. Step 3: Cross multiply
    1,121,190.80x = 1,680,786.30 × 411,053.36
  4. Step 4: Simplify right side
    1,121,190.80x = 690,892,856,056.97
  5. Step 5: Solve for x
    x = 690,892,856,056.97/1,121,190.80
  6. Step 6: Final answer
    x = 616,213.45

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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.