Home / 426,568,076.47-639,876,029.42-119,836,274.77

Finding the Fourth Proportional to 426,568,076.47, 639,876,029.42 and 119,836,274.77

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Solution

The fourth proportional to 426,568,076.47, 639,876,029.42 and 119,836,274.77 is: 179,761,130.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,568,076.47 : 639,876,029.42 = 119,836,274.77 : x
  2. Step 2: Convert to fraction form
    426,568,076.47/639,876,029.42 = 119,836,274.77/x
  3. Step 3: Cross multiply
    426,568,076.47x = 639,876,029.42 × 119,836,274.77
  4. Step 4: Simplify right side
    426,568,076.47x = 76,680,359,680,311,712
  5. Step 5: Solve for x
    x = 76,680,359,680,311,712/426,568,076.47
  6. Step 6: Final answer
    x = 179,761,130.54

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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.