Home / 1,097,065.80-1,642,391.10-782,137.80

Finding the Fourth Proportional to 1,097,065.80, 1,642,391.10 and 782,137.80

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Solution

The fourth proportional to 1,097,065.80, 1,642,391.10 and 782,137.80 is: 1,170,919.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,097,065.80 : 1,642,391.10 = 782,137.80 : x
  2. Step 2: Convert to fraction form
    1,097,065.80/1,642,391.10 = 782,137.80/x
  3. Step 3: Cross multiply
    1,097,065.80x = 1,642,391.10 × 782,137.80
  4. Step 4: Simplify right side
    1,097,065.80x = 1,284,576,161,693.58
  5. Step 5: Solve for x
    x = 1,284,576,161,693.58/1,097,065.80
  6. Step 6: Final answer
    x = 1,170,919.89

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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.