Home / 1,274,782,079.70-1,912,173,119.55-756,945,969.30

Finding the Fourth Proportional to 1,274,782,079.70, 1,912,173,119.55 and 756,945,969.30

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Solution

The fourth proportional to 1,274,782,079.70, 1,912,173,119.55 and 756,945,969.30 is: 1,135,418,953.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274,782,079.70 : 1,912,173,119.55 = 756,945,969.30 : x
  2. Step 2: Convert to fraction form
    1,274,782,079.70/1,912,173,119.55 = 756,945,969.30/x
  3. Step 3: Cross multiply
    1,274,782,079.70x = 1,912,173,119.55 × 756,945,969.30
  4. Step 4: Simplify right side
    1,274,782,079.70x = 1,447,411,735,447,179,520
  5. Step 5: Solve for x
    x = 1,447,411,735,447,179,520/1,274,782,079.70
  6. Step 6: Final answer
    x = 1,135,418,953.95

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Double scale
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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.