Home / 842,521,712.16-1,263,838,020.84-220,752,168.96

Finding the Fourth Proportional to 842,521,712.16, 1,263,838,020.84 and 220,752,168.96

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Solution

The fourth proportional to 842,521,712.16, 1,263,838,020.84 and 220,752,168.96 is: 331,142,782.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,521,712.16 : 1,263,838,020.84 = 220,752,168.96 : x
  2. Step 2: Convert to fraction form
    842,521,712.16/1,263,838,020.84 = 220,752,168.96/x
  3. Step 3: Cross multiply
    842,521,712.16x = 1,263,838,020.84 × 220,752,168.96
  4. Step 4: Simplify right side
    842,521,712.16x = 278,994,984,314,543,680
  5. Step 5: Solve for x
    x = 278,994,984,314,543,680/842,521,712.16
  6. Step 6: Final answer
    x = 331,142,782.78

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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.