Home / 1,216,246.80-1,821,605.40-768,349.20

Finding the Fourth Proportional to 1,216,246.80, 1,821,605.40 and 768,349.20

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Solution

The fourth proportional to 1,216,246.80, 1,821,605.40 and 768,349.20 is: 1,150,777.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,246.80 : 1,821,605.40 = 768,349.20 : x
  2. Step 2: Convert to fraction form
    1,216,246.80/1,821,605.40 = 768,349.20/x
  3. Step 3: Cross multiply
    1,216,246.80x = 1,821,605.40 × 768,349.20
  4. Step 4: Simplify right side
    1,216,246.80x = 1,399,629,051,805.68
  5. Step 5: Solve for x
    x = 1,399,629,051,805.68/1,216,246.80
  6. Step 6: Final answer
    x = 1,150,777.17

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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.