Home / 1,278,876,989.32-1,764,893,039.70-783,744,077.32

Finding the Fourth Proportional to 1,278,876,989.32, 1,764,893,039.70 and 783,744,077.32

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Solution

The fourth proportional to 1,278,876,989.32, 1,764,893,039.70 and 783,744,077.32 is: 1,081,593,052.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,876,989.32 : 1,764,893,039.70 = 783,744,077.32 : x
  2. Step 2: Convert to fraction form
    1,278,876,989.32/1,764,893,039.70 = 783,744,077.32/x
  3. Step 3: Cross multiply
    1,278,876,989.32x = 1,764,893,039.70 × 783,744,077.32
  4. Step 4: Simplify right side
    1,278,876,989.32x = 1,383,224,466,968,166,656
  5. Step 5: Solve for x
    x = 1,383,224,466,968,166,656/1,278,876,989.32
  6. Step 6: Final answer
    x = 1,081,593,052.75

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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.