Home / 1,760,069.80-2,638,355.10-811,786.60

Finding the Fourth Proportional to 1,760,069.80, 2,638,355.10 and 811,786.60

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Solution

The fourth proportional to 1,760,069.80, 2,638,355.10 and 811,786.60 is: 1,216,872.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,760,069.80 : 2,638,355.10 = 811,786.60 : x
  2. Step 2: Convert to fraction form
    1,760,069.80/2,638,355.10 = 811,786.60/x
  3. Step 3: Cross multiply
    1,760,069.80x = 2,638,355.10 × 811,786.60
  4. Step 4: Simplify right side
    1,760,069.80x = 2,141,781,316,221.66
  5. Step 5: Solve for x
    x = 2,141,781,316,221.66/1,760,069.80
  6. Step 6: Final answer
    x = 1,216,872.94

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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.