Home / 683,778.96-943,422.80-393,375.36

Finding the Fourth Proportional to 683,778.96, 943,422.80 and 393,375.36

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Solution

The fourth proportional to 683,778.96, 943,422.80 and 393,375.36 is: 542,747.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,778.96 : 943,422.80 = 393,375.36 : x
  2. Step 2: Convert to fraction form
    683,778.96/943,422.80 = 393,375.36/x
  3. Step 3: Cross multiply
    683,778.96x = 943,422.80 × 393,375.36
  4. Step 4: Simplify right side
    683,778.96x = 371,119,283,582.21
  5. Step 5: Solve for x
    x = 371,119,283,582.21/683,778.96
  6. Step 6: Final answer
    x = 542,747.45

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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.