Home / 438,874,987.32-658,422,340.07-127,982,639.39

Finding the Fourth Proportional to 438,874,987.32, 658,422,340.07 and 127,982,639.39

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Solution

The fourth proportional to 438,874,987.32, 658,422,340.07 and 127,982,639.39 is: 192,005,995.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,874,987.32 : 658,422,340.07 = 127,982,639.39 : x
  2. Step 2: Convert to fraction form
    438,874,987.32/658,422,340.07 = 127,982,639.39/x
  3. Step 3: Cross multiply
    438,874,987.32x = 658,422,340.07 × 127,982,639.39
  4. Step 4: Simplify right side
    438,874,987.32x = 84,266,628,911,566,736
  5. Step 5: Solve for x
    x = 84,266,628,911,566,736/438,874,987.32
  6. Step 6: Final answer
    x = 192,005,995.66

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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.