Home / 722,078.39-996,483.38-395,405.12

Finding the Fourth Proportional to 722,078.39, 996,483.38 and 395,405.12

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Solution

The fourth proportional to 722,078.39, 996,483.38 and 395,405.12 is: 545,667.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,078.39 : 996,483.38 = 395,405.12 : x
  2. Step 2: Convert to fraction form
    722,078.39/996,483.38 = 395,405.12/x
  3. Step 3: Cross multiply
    722,078.39x = 996,483.38 × 395,405.12
  4. Step 4: Simplify right side
    722,078.39x = 394,014,623,487.46
  5. Step 5: Solve for x
    x = 394,014,623,487.46/722,078.39
  6. Step 6: Final answer
    x = 545,667.38

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1.5x scale

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.