Home / 1,420,091,998.20-2,130,137,997.30-800,219,215.80

Finding the Fourth Proportional to 1,420,091,998.20, 2,130,137,997.30 and 800,219,215.80

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Solution

The fourth proportional to 1,420,091,998.20, 2,130,137,997.30 and 800,219,215.80 is: 1,200,328,823.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,091,998.20 : 2,130,137,997.30 = 800,219,215.80 : x
  2. Step 2: Convert to fraction form
    1,420,091,998.20/2,130,137,997.30 = 800,219,215.80/x
  3. Step 3: Cross multiply
    1,420,091,998.20x = 2,130,137,997.30 × 800,219,215.80
  4. Step 4: Simplify right side
    1,420,091,998.20x = 1,704,577,357,745,188,352
  5. Step 5: Solve for x
    x = 1,704,577,357,745,188,352/1,420,091,998.20
  6. Step 6: Final answer
    x = 1,200,328,823.70

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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.