Home / 1,393,288,783.20-1,922,738,835.96-766,757,211.12

Finding the Fourth Proportional to 1,393,288,783.20, 1,922,738,835.96 and 766,757,211.12

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Solution

The fourth proportional to 1,393,288,783.20, 1,922,738,835.96 and 766,757,211.12 is: 1,058,125,124.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,288,783.20 : 1,922,738,835.96 = 766,757,211.12 : x
  2. Step 2: Convert to fraction form
    1,393,288,783.20/1,922,738,835.96 = 766,757,211.12/x
  3. Step 3: Cross multiply
    1,393,288,783.20x = 1,922,738,835.96 × 766,757,211.12
  4. Step 4: Simplify right side
    1,393,288,783.20x = 1,474,273,867,572,804,864
  5. Step 5: Solve for x
    x = 1,474,273,867,572,804,864/1,393,288,783.20
  6. Step 6: Final answer
    x = 1,058,125,124.78

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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.