Home / 426,497,881.41-639,982,886.94-208,150,032.15

Finding the Fourth Proportional to 426,497,881.41, 639,982,886.94 and 208,150,032.15

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Solution

The fourth proportional to 426,497,881.41, 639,982,886.94 and 208,150,032.15 is: 312,340,258.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,497,881.41 : 639,982,886.94 = 208,150,032.15 : x
  2. Step 2: Convert to fraction form
    426,497,881.41/639,982,886.94 = 208,150,032.15/x
  3. Step 3: Cross multiply
    426,497,881.41x = 639,982,886.94 × 208,150,032.15
  4. Step 4: Simplify right side
    426,497,881.41x = 133,212,458,492,010,832
  5. Step 5: Solve for x
    x = 133,212,458,492,010,832/426,497,881.41
  6. Step 6: Final answer
    x = 312,340,258.41

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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.