Home / 426,377,790.60-639,469,998.45-193,054,473.81

Finding the Fourth Proportional to 426,377,790.60, 639,469,998.45 and 193,054,473.81

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Solution

The fourth proportional to 426,377,790.60, 639,469,998.45 and 193,054,473.81 is: 289,537,932.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,377,790.60 : 639,469,998.45 = 193,054,473.81 : x
  2. Step 2: Convert to fraction form
    426,377,790.60/639,469,998.45 = 193,054,473.81/x
  3. Step 3: Cross multiply
    426,377,790.60x = 639,469,998.45 × 193,054,473.81
  4. Step 4: Simplify right side
    426,377,790.60x = 123,452,544,068,046,272
  5. Step 5: Solve for x
    x = 123,452,544,068,046,272/426,377,790.60
  6. Step 6: Final answer
    x = 289,537,932.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.