Home / 1,320,485.73-1,979,388.60-750,689.73

Finding the Fourth Proportional to 1,320,485.73, 1,979,388.60 and 750,689.73

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Solution

The fourth proportional to 1,320,485.73, 1,979,388.60 and 750,689.73 is: 1,125,272.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,485.73 : 1,979,388.60 = 750,689.73 : x
  2. Step 2: Convert to fraction form
    1,320,485.73/1,979,388.60 = 750,689.73/x
  3. Step 3: Cross multiply
    1,320,485.73x = 1,979,388.60 × 750,689.73
  4. Step 4: Simplify right side
    1,320,485.73x = 1,485,906,693,699.08
  5. Step 5: Solve for x
    x = 1,485,906,693,699.08/1,320,485.73
  6. Step 6: Final answer
    x = 1,125,272.81

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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.