Home / 426,497,936.04-639,982,970.64-208,150,086.78

Finding the Fourth Proportional to 426,497,936.04, 639,982,970.64 and 208,150,086.78

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Solution

The fourth proportional to 426,497,936.04, 639,982,970.64 and 208,150,086.78 is: 312,340,341.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,497,936.04 : 639,982,970.64 = 208,150,086.78 : x
  2. Step 2: Convert to fraction form
    426,497,936.04/639,982,970.64 = 208,150,086.78/x
  3. Step 3: Cross multiply
    426,497,936.04x = 639,982,970.64 × 208,150,086.78
  4. Step 4: Simplify right side
    426,497,936.04x = 133,212,510,876,438,192
  5. Step 5: Solve for x
    x = 133,212,510,876,438,192/426,497,936.04
  6. Step 6: Final answer
    x = 312,340,341.23

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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.