Home / 1,389,426.24-1,917,511.04-777,640.32

Finding the Fourth Proportional to 1,389,426.24, 1,917,511.04 and 777,640.32

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Solution

The fourth proportional to 1,389,426.24, 1,917,511.04 and 777,640.32 is: 1,073,201.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,426.24 : 1,917,511.04 = 777,640.32 : x
  2. Step 2: Convert to fraction form
    1,389,426.24/1,917,511.04 = 777,640.32/x
  3. Step 3: Cross multiply
    1,389,426.24x = 1,917,511.04 × 777,640.32
  4. Step 4: Simplify right side
    1,389,426.24x = 1,491,133,898,749.13
  5. Step 5: Solve for x
    x = 1,491,133,898,749.13/1,389,426.24
  6. Step 6: Final answer
    x = 1,073,201.19

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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.