Home / 1,386,977.27-1,914,022.39-775,129.60

Finding the Fourth Proportional to 1,386,977.27, 1,914,022.39 and 775,129.60

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Solution

The fourth proportional to 1,386,977.27, 1,914,022.39 and 775,129.60 is: 1,069,675.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,977.27 : 1,914,022.39 = 775,129.60 : x
  2. Step 2: Convert to fraction form
    1,386,977.27/1,914,022.39 = 775,129.60/x
  3. Step 3: Cross multiply
    1,386,977.27x = 1,914,022.39 × 775,129.60
  4. Step 4: Simplify right side
    1,386,977.27x = 1,483,615,396,105.98
  5. Step 5: Solve for x
    x = 1,483,615,396,105.98/1,386,977.27
  6. Step 6: Final answer
    x = 1,069,675.35

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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.