Home / 1,387,529.70-1,914,805.22-775,716.45

Finding the Fourth Proportional to 1,387,529.70, 1,914,805.22 and 775,716.45

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Solution

The fourth proportional to 1,387,529.70, 1,914,805.22 and 775,716.45 is: 1,070,496.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,529.70 : 1,914,805.22 = 775,716.45 : x
  2. Step 2: Convert to fraction form
    1,387,529.70/1,914,805.22 = 775,716.45/x
  3. Step 3: Cross multiply
    1,387,529.70x = 1,914,805.22 × 775,716.45
  4. Step 4: Simplify right side
    1,387,529.70x = 1,485,345,901,004.17
  5. Step 5: Solve for x
    x = 1,485,345,901,004.17/1,387,529.70
  6. Step 6: Final answer
    x = 1,070,496.66

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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.