Home / 861,483.78-1,188,847.71-479,502.36

Finding the Fourth Proportional to 861,483.78, 1,188,847.71 and 479,502.36

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Solution

The fourth proportional to 861,483.78, 1,188,847.71 and 479,502.36 is: 661,713.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,483.78 : 1,188,847.71 = 479,502.36 : x
  2. Step 2: Convert to fraction form
    861,483.78/1,188,847.71 = 479,502.36/x
  3. Step 3: Cross multiply
    861,483.78x = 1,188,847.71 × 479,502.36
  4. Step 4: Simplify right side
    861,483.78x = 570,055,282,625.60
  5. Step 5: Solve for x
    x = 570,055,282,625.60/861,483.78
  6. Step 6: Final answer
    x = 661,713.31

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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.