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Finding the Fourth Proportional to 977,068,917.20, 1,465,603,375.80 and 330,836,661.20

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Solution

The fourth proportional to 977,068,917.20, 1,465,603,375.80 and 330,836,661.20 is: 496,254,991.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,068,917.20 : 1,465,603,375.80 = 330,836,661.20 : x
  2. Step 2: Convert to fraction form
    977,068,917.20/1,465,603,375.80 = 330,836,661.20/x
  3. Step 3: Cross multiply
    977,068,917.20x = 1,465,603,375.80 × 330,836,661.20
  4. Step 4: Simplify right side
    977,068,917.20x = 484,875,327,493,120,832
  5. Step 5: Solve for x
    x = 484,875,327,493,120,832/977,068,917.20
  6. Step 6: Final answer
    x = 496,254,991.80

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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.