Home / 782,919,691.26-1,079,426,212.85-641,269,079.06

Finding the Fourth Proportional to 782,919,691.26, 1,079,426,212.85 and 641,269,079.06

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Solution

The fourth proportional to 782,919,691.26, 1,079,426,212.85 and 641,269,079.06 is: 884,129,829.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,919,691.26 : 1,079,426,212.85 = 641,269,079.06 : x
  2. Step 2: Convert to fraction form
    782,919,691.26/1,079,426,212.85 = 641,269,079.06/x
  3. Step 3: Cross multiply
    782,919,691.26x = 1,079,426,212.85 × 641,269,079.06
  4. Step 4: Simplify right side
    782,919,691.26x = 692,202,653,427,542,912
  5. Step 5: Solve for x
    x = 692,202,653,427,542,912/782,919,691.26
  6. Step 6: Final answer
    x = 884,129,829.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.