Home / 1,321,121.41-1,823,151.05-777,277.69

Finding the Fourth Proportional to 1,321,121.41, 1,823,151.05 and 777,277.69

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Solution

The fourth proportional to 1,321,121.41, 1,823,151.05 and 777,277.69 is: 1,072,645.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,121.41 : 1,823,151.05 = 777,277.69 : x
  2. Step 2: Convert to fraction form
    1,321,121.41/1,823,151.05 = 777,277.69/x
  3. Step 3: Cross multiply
    1,321,121.41x = 1,823,151.05 × 777,277.69
  4. Step 4: Simplify right side
    1,321,121.41x = 1,417,094,636,665.07
  5. Step 5: Solve for x
    x = 1,417,094,636,665.07/1,321,121.41
  6. Step 6: Final answer
    x = 1,072,645.27

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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.