Home / 1,315,826.32-1,972,149.04-640,896.26

Finding the Fourth Proportional to 1,315,826.32, 1,972,149.04 and 640,896.26

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Solution

The fourth proportional to 1,315,826.32, 1,972,149.04 and 640,896.26 is: 960,569.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,826.32 : 1,972,149.04 = 640,896.26 : x
  2. Step 2: Convert to fraction form
    1,315,826.32/1,972,149.04 = 640,896.26/x
  3. Step 3: Cross multiply
    1,315,826.32x = 1,972,149.04 × 640,896.26
  4. Step 4: Simplify right side
    1,315,826.32x = 1,263,942,943,898.59
  5. Step 5: Solve for x
    x = 1,263,942,943,898.59/1,315,826.32
  6. Step 6: Final answer
    x = 960,569.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.