Home / 1,913,205.78-2,640,124.35-1,188,037.95

Finding the Fourth Proportional to 1,913,205.78, 2,640,124.35 and 1,188,037.95

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Solution

The fourth proportional to 1,913,205.78, 2,640,124.35 and 1,188,037.95 is: 1,639,430.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913,205.78 : 2,640,124.35 = 1,188,037.95 : x
  2. Step 2: Convert to fraction form
    1,913,205.78/2,640,124.35 = 1,188,037.95/x
  3. Step 3: Cross multiply
    1,913,205.78x = 2,640,124.35 × 1,188,037.95
  4. Step 4: Simplify right side
    1,913,205.78x = 3,136,567,920,519.08
  5. Step 5: Solve for x
    x = 3,136,567,920,519.08/1,913,205.78
  6. Step 6: Final answer
    x = 1,639,430.51

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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.