Home / 1,264,990,456.80-1,897,310,725.20-392,191,999.20

Finding the Fourth Proportional to 1,264,990,456.80, 1,897,310,725.20 and 392,191,999.20

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Solution

The fourth proportional to 1,264,990,456.80, 1,897,310,725.20 and 392,191,999.20 is: 588,233,754.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264,990,456.80 : 1,897,310,725.20 = 392,191,999.20 : x
  2. Step 2: Convert to fraction form
    1,264,990,456.80/1,897,310,725.20 = 392,191,999.20/x
  3. Step 3: Cross multiply
    1,264,990,456.80x = 1,897,310,725.20 × 392,191,999.20
  4. Step 4: Simplify right side
    1,264,990,456.80x = 744,110,086,419,789,824
  5. Step 5: Solve for x
    x = 744,110,086,419,789,824/1,264,990,456.80
  6. Step 6: Final answer
    x = 588,233,754.98

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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.