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Finding the Fourth Proportional to 1,170,068,772.80, 1,755,362,974.80 and 393,692,520.80

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Solution

The fourth proportional to 1,170,068,772.80, 1,755,362,974.80 and 393,692,520.80 is: 590,626,201.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170,068,772.80 : 1,755,362,974.80 = 393,692,520.80 : x
  2. Step 2: Convert to fraction form
    1,170,068,772.80/1,755,362,974.80 = 393,692,520.80/x
  3. Step 3: Cross multiply
    1,170,068,772.80x = 1,755,362,974.80 × 393,692,520.80
  4. Step 4: Simplify right side
    1,170,068,772.80x = 691,073,274,467,998,848
  5. Step 5: Solve for x
    x = 691,073,274,467,998,848/1,170,068,772.80
  6. Step 6: Final answer
    x = 590,626,201.24

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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.