Home / 685,320.54-945,841.31-394,876.47

Finding the Fourth Proportional to 685,320.54, 945,841.31 and 394,876.47

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Solution

The fourth proportional to 685,320.54, 945,841.31 and 394,876.47 is: 544,986.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,320.54 : 945,841.31 = 394,876.47 : x
  2. Step 2: Convert to fraction form
    685,320.54/945,841.31 = 394,876.47/x
  3. Step 3: Cross multiply
    685,320.54x = 945,841.31 × 394,876.47
  4. Step 4: Simplify right side
    685,320.54x = 373,490,477,672.98
  5. Step 5: Solve for x
    x = 373,490,477,672.98/685,320.54
  6. Step 6: Final answer
    x = 544,986.55

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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.