Home / 775,989,321.78-1,070,705,406.09-445,900,687.86

Finding the Fourth Proportional to 775,989,321.78, 1,070,705,406.09 and 445,900,687.86

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Solution

The fourth proportional to 775,989,321.78, 1,070,705,406.09 and 445,900,687.86 is: 615,251,091.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,989,321.78 : 1,070,705,406.09 = 445,900,687.86 : x
  2. Step 2: Convert to fraction form
    775,989,321.78/1,070,705,406.09 = 445,900,687.86/x
  3. Step 3: Cross multiply
    775,989,321.78x = 1,070,705,406.09 × 445,900,687.86
  4. Step 4: Simplify right side
    775,989,321.78x = 477,428,277,070,951,680
  5. Step 5: Solve for x
    x = 477,428,277,070,951,680/775,989,321.78
  6. Step 6: Final answer
    x = 615,251,091.31

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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.