Home / 398,699,761.58-550,205,772.26-220,083,749.12

Finding the Fourth Proportional to 398,699,761.58, 550,205,772.26 and 220,083,749.12

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Solution

The fourth proportional to 398,699,761.58, 550,205,772.26 and 220,083,749.12 is: 303,715,629.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,699,761.58 : 550,205,772.26 = 220,083,749.12 : x
  2. Step 2: Convert to fraction form
    398,699,761.58/550,205,772.26 = 220,083,749.12/x
  3. Step 3: Cross multiply
    398,699,761.58x = 550,205,772.26 × 220,083,749.12
  4. Step 4: Simplify right side
    398,699,761.58x = 121,091,349,146,720,784
  5. Step 5: Solve for x
    x = 121,091,349,146,720,784/398,699,761.58
  6. Step 6: Final answer
    x = 303,715,629.69

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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.