Home / 1,212,366,987.80-1,815,149,259.30-1,178,354,763.80

Finding the Fourth Proportional to 1,212,366,987.80, 1,815,149,259.30 and 1,178,354,763.80

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Solution

The fourth proportional to 1,212,366,987.80, 1,815,149,259.30 and 1,178,354,763.80 is: 1,764,226,342.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,366,987.80 : 1,815,149,259.30 = 1,178,354,763.80 : x
  2. Step 2: Convert to fraction form
    1,212,366,987.80/1,815,149,259.30 = 1,178,354,763.80/x
  3. Step 3: Cross multiply
    1,212,366,987.80x = 1,815,149,259.30 × 1,178,354,763.80
  4. Step 4: Simplify right side
    1,212,366,987.80x = 2,138,889,776,704,196,352
  5. Step 5: Solve for x
    x = 2,138,889,776,704,196,352/1,212,366,987.80
  6. Step 6: Final answer
    x = 1,764,226,342.54

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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.