Home / 1,288,469.92-1,777,802.16-779,161.36

Finding the Fourth Proportional to 1,288,469.92, 1,777,802.16 and 779,161.36

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Solution

The fourth proportional to 1,288,469.92, 1,777,802.16 and 779,161.36 is: 1,075,069.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,469.92 : 1,777,802.16 = 779,161.36 : x
  2. Step 2: Convert to fraction form
    1,288,469.92/1,777,802.16 = 779,161.36/x
  3. Step 3: Cross multiply
    1,288,469.92x = 1,777,802.16 × 779,161.36
  4. Step 4: Simplify right side
    1,288,469.92x = 1,385,194,748,796.54
  5. Step 5: Solve for x
    x = 1,385,194,748,796.54/1,288,469.92
  6. Step 6: Final answer
    x = 1,075,069.53

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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.