Home / 398,186,696.82-549,530,357.30-219,605,513.56

Finding the Fourth Proportional to 398,186,696.82, 549,530,357.30 and 219,605,513.56

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Solution

The fourth proportional to 398,186,696.82, 549,530,357.30 and 219,605,513.56 is: 303,073,651.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,186,696.82 : 549,530,357.30 = 219,605,513.56 : x
  2. Step 2: Convert to fraction form
    398,186,696.82/549,530,357.30 = 219,605,513.56/x
  3. Step 3: Cross multiply
    398,186,696.82x = 549,530,357.30 × 219,605,513.56
  4. Step 4: Simplify right side
    398,186,696.82x = 120,679,896,330,028,480
  5. Step 5: Solve for x
    x = 120,679,896,330,028,480/398,186,696.82
  6. Step 6: Final answer
    x = 303,073,651.86

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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.