Home / 487,815,485.82-673,198,849.35-276,105,487.74

Finding the Fourth Proportional to 487,815,485.82, 673,198,849.35 and 276,105,487.74

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Solution

The fourth proportional to 487,815,485.82, 673,198,849.35 and 276,105,487.74 is: 381,033,202.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,815,485.82 : 673,198,849.35 = 276,105,487.74 : x
  2. Step 2: Convert to fraction form
    487,815,485.82/673,198,849.35 = 276,105,487.74/x
  3. Step 3: Cross multiply
    487,815,485.82x = 673,198,849.35 × 276,105,487.74
  4. Step 4: Simplify right side
    487,815,485.82x = 185,873,896,645,788,544
  5. Step 5: Solve for x
    x = 185,873,896,645,788,544/487,815,485.82
  6. Step 6: Final answer
    x = 381,033,202.20

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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.