Home / 381,666,219.75-526,721,881.52-287,414,078.94

Finding the Fourth Proportional to 381,666,219.75, 526,721,881.52 and 287,414,078.94

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Solution

The fourth proportional to 381,666,219.75, 526,721,881.52 and 287,414,078.94 is: 396,648,371.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,666,219.75 : 526,721,881.52 = 287,414,078.94 : x
  2. Step 2: Convert to fraction form
    381,666,219.75/526,721,881.52 = 287,414,078.94/x
  3. Step 3: Cross multiply
    381,666,219.75x = 526,721,881.52 × 287,414,078.94
  4. Step 4: Simplify right side
    381,666,219.75x = 151,387,284,433,177,536
  5. Step 5: Solve for x
    x = 151,387,284,433,177,536/381,666,219.75
  6. Step 6: Final answer
    x = 396,648,371.27

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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.