Home / 1,345,291,211.20-2,017,936,816.80-1,287,178,137.85

Finding the Fourth Proportional to 1,345,291,211.20, 2,017,936,816.80 and 1,287,178,137.85

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Solution

The fourth proportional to 1,345,291,211.20, 2,017,936,816.80 and 1,287,178,137.85 is: 1,930,767,206.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,291,211.20 : 2,017,936,816.80 = 1,287,178,137.85 : x
  2. Step 2: Convert to fraction form
    1,345,291,211.20/2,017,936,816.80 = 1,287,178,137.85/x
  3. Step 3: Cross multiply
    1,345,291,211.20x = 2,017,936,816.80 × 1,287,178,137.85
  4. Step 4: Simplify right side
    1,345,291,211.20x = 2,597,444,154,147,580,416
  5. Step 5: Solve for x
    x = 2,597,444,154,147,580,416/1,345,291,211.20
  6. Step 6: Final answer
    x = 1,930,767,206.78

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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.