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Finding the Fourth Proportional to 699,840,916.80, 1,049,761,375.20 and 695,809,838.40

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Solution

The fourth proportional to 699,840,916.80, 1,049,761,375.20 and 695,809,838.40 is: 1,043,714,757.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,840,916.80 : 1,049,761,375.20 = 695,809,838.40 : x
  2. Step 2: Convert to fraction form
    699,840,916.80/1,049,761,375.20 = 695,809,838.40/x
  3. Step 3: Cross multiply
    699,840,916.80x = 1,049,761,375.20 × 695,809,838.40
  4. Step 4: Simplify right side
    699,840,916.80x = 730,434,292,836,473,728
  5. Step 5: Solve for x
    x = 730,434,292,836,473,728/699,840,916.80
  6. Step 6: Final answer
    x = 1,043,714,757.60

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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.