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Finding the Fourth Proportional to 611,680,474.80, 917,520,712.20 and 180,858,970.80

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Solution

The fourth proportional to 611,680,474.80, 917,520,712.20 and 180,858,970.80 is: 271,288,456.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,680,474.80 : 917,520,712.20 = 180,858,970.80 : x
  2. Step 2: Convert to fraction form
    611,680,474.80/917,520,712.20 = 180,858,970.80/x
  3. Step 3: Cross multiply
    611,680,474.80x = 917,520,712.20 × 180,858,970.80
  4. Step 4: Simplify right side
    611,680,474.80x = 165,941,851,696,175,008
  5. Step 5: Solve for x
    x = 165,941,851,696,175,008/611,680,474.80
  6. Step 6: Final answer
    x = 271,288,456.20

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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.