Home / 1,210,231,835.30-1,815,095,810.55-520,161,601.70

Finding the Fourth Proportional to 1,210,231,835.30, 1,815,095,810.55 and 520,161,601.70

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Solution

The fourth proportional to 1,210,231,835.30, 1,815,095,810.55 and 520,161,601.70 is: 780,134,116.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,231,835.30 : 1,815,095,810.55 = 520,161,601.70 : x
  2. Step 2: Convert to fraction form
    1,210,231,835.30/1,815,095,810.55 = 520,161,601.70/x
  3. Step 3: Cross multiply
    1,210,231,835.30x = 1,815,095,810.55 × 520,161,601.70
  4. Step 4: Simplify right side
    1,210,231,835.30x = 944,143,144,054,647,680
  5. Step 5: Solve for x
    x = 944,143,144,054,647,680/1,210,231,835.30
  6. Step 6: Final answer
    x = 780,134,116.88

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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.