Home / 1,381,080.36-1,905,846.66-777,386.28

Finding the Fourth Proportional to 1,381,080.36, 1,905,846.66 and 777,386.28

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Solution

The fourth proportional to 1,381,080.36, 1,905,846.66 and 777,386.28 is: 1,072,768.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,080.36 : 1,905,846.66 = 777,386.28 : x
  2. Step 2: Convert to fraction form
    1,381,080.36/1,905,846.66 = 777,386.28/x
  3. Step 3: Cross multiply
    1,381,080.36x = 1,905,846.66 × 777,386.28
  4. Step 4: Simplify right side
    1,381,080.36x = 1,481,579,045,267.82
  5. Step 5: Solve for x
    x = 1,481,579,045,267.82/1,381,080.36
  6. Step 6: Final answer
    x = 1,072,768.17

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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.