Home / 1,311,864.25-1,809,754.13-767,666.21

Finding the Fourth Proportional to 1,311,864.25, 1,809,754.13 and 767,666.21

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Solution

The fourth proportional to 1,311,864.25, 1,809,754.13 and 767,666.21 is: 1,059,017.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,864.25 : 1,809,754.13 = 767,666.21 : x
  2. Step 2: Convert to fraction form
    1,311,864.25/1,809,754.13 = 767,666.21/x
  3. Step 3: Cross multiply
    1,311,864.25x = 1,809,754.13 × 767,666.21
  4. Step 4: Simplify right side
    1,311,864.25x = 1,389,287,081,121.85
  5. Step 5: Solve for x
    x = 1,389,287,081,121.85/1,311,864.25
  6. Step 6: Final answer
    x = 1,059,017.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.