Home / 2,188,731.52-3,020,137.02-1,221,840.58

Finding the Fourth Proportional to 2,188,731.52, 3,020,137.02 and 1,221,840.58

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Solution

The fourth proportional to 2,188,731.52, 3,020,137.02 and 1,221,840.58 is: 1,685,965.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188,731.52 : 3,020,137.02 = 1,221,840.58 : x
  2. Step 2: Convert to fraction form
    2,188,731.52/3,020,137.02 = 1,221,840.58/x
  3. Step 3: Cross multiply
    2,188,731.52x = 3,020,137.02 × 1,221,840.58
  4. Step 4: Simplify right side
    2,188,731.52x = 3,690,125,968,196.27
  5. Step 5: Solve for x
    x = 3,690,125,968,196.27/2,188,731.52
  6. Step 6: Final answer
    x = 1,685,965.56

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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.