Home / 553,538,540.25-763,899,128.78-306,035,837.73

Finding the Fourth Proportional to 553,538,540.25, 763,899,128.78 and 306,035,837.73

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Solution

The fourth proportional to 553,538,540.25, 763,899,128.78 and 306,035,837.73 is: 422,338,270.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,538,540.25 : 763,899,128.78 = 306,035,837.73 : x
  2. Step 2: Convert to fraction form
    553,538,540.25/763,899,128.78 = 306,035,837.73/x
  3. Step 3: Cross multiply
    553,538,540.25x = 763,899,128.78 × 306,035,837.73
  4. Step 4: Simplify right side
    553,538,540.25x = 233,780,509,815,874,272
  5. Step 5: Solve for x
    x = 233,780,509,815,874,272/553,538,540.25
  6. Step 6: Final answer
    x = 422,338,270.63

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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.