Home / 589,259,970.78-813,198,390.72-321,350,420.82

Finding the Fourth Proportional to 589,259,970.78, 813,198,390.72 and 321,350,420.82

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Solution

The fourth proportional to 589,259,970.78, 813,198,390.72 and 321,350,420.82 is: 443,474,286.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,259,970.78 : 813,198,390.72 = 321,350,420.82 : x
  2. Step 2: Convert to fraction form
    589,259,970.78/813,198,390.72 = 321,350,420.82/x
  3. Step 3: Cross multiply
    589,259,970.78x = 813,198,390.72 × 321,350,420.82
  4. Step 4: Simplify right side
    589,259,970.78x = 261,321,645,068,018,784
  5. Step 5: Solve for x
    x = 261,321,645,068,018,784/589,259,970.78
  6. Step 6: Final answer
    x = 443,474,286.44

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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.