Home / 1,210,231,845.80-1,815,095,826.30-520,161,612.20

Finding the Fourth Proportional to 1,210,231,845.80, 1,815,095,826.30 and 520,161,612.20

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Solution

The fourth proportional to 1,210,231,845.80, 1,815,095,826.30 and 520,161,612.20 is: 780,134,132.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,231,845.80 : 1,815,095,826.30 = 520,161,612.20 : x
  2. Step 2: Convert to fraction form
    1,210,231,845.80/1,815,095,826.30 = 520,161,612.20/x
  3. Step 3: Cross multiply
    1,210,231,845.80x = 1,815,095,826.30 × 520,161,612.20
  4. Step 4: Simplify right side
    1,210,231,845.80x = 944,143,171,305,699,072
  5. Step 5: Solve for x
    x = 944,143,171,305,699,072/1,210,231,845.80
  6. Step 6: Final answer
    x = 780,134,132.63

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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.