Home / 777,722.80-1,073,257.24-420,026.80

Finding the Fourth Proportional to 777,722.80, 1,073,257.24 and 420,026.80

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Solution

The fourth proportional to 777,722.80, 1,073,257.24 and 420,026.80 is: 579,636.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,722.80 : 1,073,257.24 = 420,026.80 : x
  2. Step 2: Convert to fraction form
    777,722.80/1,073,257.24 = 420,026.80/x
  3. Step 3: Cross multiply
    777,722.80x = 1,073,257.24 × 420,026.80
  4. Step 4: Simplify right side
    777,722.80x = 450,796,804,094.03
  5. Step 5: Solve for x
    x = 450,796,804,094.03/777,722.80
  6. Step 6: Final answer
    x = 579,636.86

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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.