Home / 1,187,904.80-1,779,524.40-809,991.20

Finding the Fourth Proportional to 1,187,904.80, 1,779,524.40 and 809,991.20

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Solution

The fourth proportional to 1,187,904.80, 1,779,524.40 and 809,991.20 is: 1,213,396.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,904.80 : 1,779,524.40 = 809,991.20 : x
  2. Step 2: Convert to fraction form
    1,187,904.80/1,779,524.40 = 809,991.20/x
  3. Step 3: Cross multiply
    1,187,904.80x = 1,779,524.40 × 809,991.20
  4. Step 4: Simplify right side
    1,187,904.80x = 1,441,399,104,185.28
  5. Step 5: Solve for x
    x = 1,441,399,104,185.28/1,187,904.80
  6. Step 6: Final answer
    x = 1,213,396.14

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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.