Home / 1,387,431.94-1,914,663.76-775,610.49

Finding the Fourth Proportional to 1,387,431.94, 1,914,663.76 and 775,610.49

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Solution

The fourth proportional to 1,387,431.94, 1,914,663.76 and 775,610.49 is: 1,070,346.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,431.94 : 1,914,663.76 = 775,610.49 : x
  2. Step 2: Convert to fraction form
    1,387,431.94/1,914,663.76 = 775,610.49/x
  3. Step 3: Cross multiply
    1,387,431.94x = 1,914,663.76 × 775,610.49
  4. Step 4: Simplify right side
    1,387,431.94x = 1,485,033,297,078.84
  5. Step 5: Solve for x
    x = 1,485,033,297,078.84/1,387,431.94
  6. Step 6: Final answer
    x = 1,070,346.77

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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.