Home / 1,389,919,570.72-2,092,393,620.72-1,266,217,211.90

Finding the Fourth Proportional to 1,389,919,570.72, 2,092,393,620.72 and 1,266,217,211.90

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Solution

The fourth proportional to 1,389,919,570.72, 2,092,393,620.72 and 1,266,217,211.90 is: 1,906,171,315.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,919,570.72 : 2,092,393,620.72 = 1,266,217,211.90 : x
  2. Step 2: Convert to fraction form
    1,389,919,570.72/2,092,393,620.72 = 1,266,217,211.90/x
  3. Step 3: Cross multiply
    1,389,919,570.72x = 2,092,393,620.72 × 1,266,217,211.90
  4. Step 4: Simplify right side
    1,389,919,570.72x = 2,649,424,816,630,655,488
  5. Step 5: Solve for x
    x = 2,649,424,816,630,655,488/1,389,919,570.72
  6. Step 6: Final answer
    x = 1,906,171,315.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.