Home / 1,913,215.53-2,640,137.79-1,188,047.73

Finding the Fourth Proportional to 1,913,215.53, 2,640,137.79 and 1,188,047.73

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Solution

The fourth proportional to 1,913,215.53, 2,640,137.79 and 1,188,047.73 is: 1,639,443.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913,215.53 : 2,640,137.79 = 1,188,047.73 : x
  2. Step 2: Convert to fraction form
    1,913,215.53/2,640,137.79 = 1,188,047.73/x
  3. Step 3: Cross multiply
    1,913,215.53x = 2,640,137.79 × 1,188,047.73
  4. Step 4: Simplify right side
    1,913,215.53x = 3,136,609,708,296.72
  5. Step 5: Solve for x
    x = 3,136,609,708,296.72/1,913,215.53
  6. Step 6: Final answer
    x = 1,639,443.99

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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.