Home / 1,293,647,619.20-1,940,471,428.80-711,156,790.40

Finding the Fourth Proportional to 1,293,647,619.20, 1,940,471,428.80 and 711,156,790.40

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Solution

The fourth proportional to 1,293,647,619.20, 1,940,471,428.80 and 711,156,790.40 is: 1,066,735,185.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,647,619.20 : 1,940,471,428.80 = 711,156,790.40 : x
  2. Step 2: Convert to fraction form
    1,293,647,619.20/1,940,471,428.80 = 711,156,790.40/x
  3. Step 3: Cross multiply
    1,293,647,619.20x = 1,940,471,428.80 × 711,156,790.40
  4. Step 4: Simplify right side
    1,293,647,619.20x = 1,379,979,433,168,310,016
  5. Step 5: Solve for x
    x = 1,379,979,433,168,310,016/1,293,647,619.20
  6. Step 6: Final answer
    x = 1,066,735,185.60

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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.