Home / 1,381,079.36-1,905,845.28-777,385.28

Finding the Fourth Proportional to 1,381,079.36, 1,905,845.28 and 777,385.28

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Solution

The fourth proportional to 1,381,079.36, 1,905,845.28 and 777,385.28 is: 1,072,766.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,079.36 : 1,905,845.28 = 777,385.28 : x
  2. Step 2: Convert to fraction form
    1,381,079.36/1,905,845.28 = 777,385.28/x
  3. Step 3: Cross multiply
    1,381,079.36x = 1,905,845.28 × 777,385.28
  4. Step 4: Simplify right side
    1,381,079.36x = 1,481,576,066,629.48
  5. Step 5: Solve for x
    x = 1,481,576,066,629.48/1,381,079.36
  6. Step 6: Final answer
    x = 1,072,766.79

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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.