Home / 1,210,231,847.80-1,815,095,829.30-520,161,614.20

Finding the Fourth Proportional to 1,210,231,847.80, 1,815,095,829.30 and 520,161,614.20

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Solution

The fourth proportional to 1,210,231,847.80, 1,815,095,829.30 and 520,161,614.20 is: 780,134,135.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,231,847.80 : 1,815,095,829.30 = 520,161,614.20 : x
  2. Step 2: Convert to fraction form
    1,210,231,847.80/1,815,095,829.30 = 520,161,614.20/x
  3. Step 3: Cross multiply
    1,210,231,847.80x = 1,815,095,829.30 × 520,161,614.20
  4. Step 4: Simplify right side
    1,210,231,847.80x = 944,143,176,496,375,552
  5. Step 5: Solve for x
    x = 944,143,176,496,375,552/1,210,231,847.80
  6. Step 6: Final answer
    x = 780,134,135.63

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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.