Home / 386,127,001.20-579,022,540.20-127,242,188.40

Finding the Fourth Proportional to 386,127,001.20, 579,022,540.20 and 127,242,188.40

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Solution

The fourth proportional to 386,127,001.20, 579,022,540.20 and 127,242,188.40 is: 190,807,933.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,127,001.20 : 579,022,540.20 = 127,242,188.40 : x
  2. Step 2: Convert to fraction form
    386,127,001.20/579,022,540.20 = 127,242,188.40/x
  3. Step 3: Cross multiply
    386,127,001.20x = 579,022,540.20 × 127,242,188.40
  4. Step 4: Simplify right side
    386,127,001.20x = 73,676,095,147,974,976
  5. Step 5: Solve for x
    x = 73,676,095,147,974,976/386,127,001.20
  6. Step 6: Final answer
    x = 190,807,933.45

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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.