Home / 1,276,517,790.49-1,912,095,199.21-809,939,048.70

Finding the Fourth Proportional to 1,276,517,790.49, 1,912,095,199.21 and 809,939,048.70

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Solution

The fourth proportional to 1,276,517,790.49, 1,912,095,199.21 and 809,939,048.70 is: 1,213,207,193.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,517,790.49 : 1,912,095,199.21 = 809,939,048.70 : x
  2. Step 2: Convert to fraction form
    1,276,517,790.49/1,912,095,199.21 = 809,939,048.70/x
  3. Step 3: Cross multiply
    1,276,517,790.49x = 1,912,095,199.21 × 809,939,048.70
  4. Step 4: Simplify right side
    1,276,517,790.49x = 1,548,680,566,671,984,640
  5. Step 5: Solve for x
    x = 1,548,680,566,671,984,640/1,276,517,790.49
  6. Step 6: Final answer
    x = 1,213,207,193.98

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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.