Home / 782,447.58-1,079,791.36-438,280.54

Finding the Fourth Proportional to 782,447.58, 1,079,791.36 and 438,280.54

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Solution

The fourth proportional to 782,447.58, 1,079,791.36 and 438,280.54 is: 604,834.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,447.58 : 1,079,791.36 = 438,280.54 : x
  2. Step 2: Convert to fraction form
    782,447.58/1,079,791.36 = 438,280.54/x
  3. Step 3: Cross multiply
    782,447.58x = 1,079,791.36 × 438,280.54
  4. Step 4: Simplify right side
    782,447.58x = 473,251,536,552.96
  5. Step 5: Solve for x
    x = 473,251,536,552.96/782,447.58
  6. Step 6: Final answer
    x = 604,834.81

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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.