Home / 2,640,491.20-3,960,736.80-645,947.20

Finding the Fourth Proportional to 2,640,491.20, 3,960,736.80 and 645,947.20

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Solution

The fourth proportional to 2,640,491.20, 3,960,736.80 and 645,947.20 is: 968,920.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640,491.20 : 3,960,736.80 = 645,947.20 : x
  2. Step 2: Convert to fraction form
    2,640,491.20/3,960,736.80 = 645,947.20/x
  3. Step 3: Cross multiply
    2,640,491.20x = 3,960,736.80 × 645,947.20
  4. Step 4: Simplify right side
    2,640,491.20x = 2,558,426,845,896.96
  5. Step 5: Solve for x
    x = 2,558,426,845,896.96/2,640,491.20
  6. Step 6: Final answer
    x = 968,920.80

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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.