Home / 1,187,910.80-1,779,533.40-809,997.20

Finding the Fourth Proportional to 1,187,910.80, 1,779,533.40 and 809,997.20

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Solution

The fourth proportional to 1,187,910.80, 1,779,533.40 and 809,997.20 is: 1,213,405.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,910.80 : 1,779,533.40 = 809,997.20 : x
  2. Step 2: Convert to fraction form
    1,187,910.80/1,779,533.40 = 809,997.20/x
  3. Step 3: Cross multiply
    1,187,910.80x = 1,779,533.40 × 809,997.20
  4. Step 4: Simplify right side
    1,187,910.80x = 1,441,417,071,306.48
  5. Step 5: Solve for x
    x = 1,441,417,071,306.48/1,187,910.80
  6. Step 6: Final answer
    x = 1,213,405.14

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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.