Home / 658,401.36-908,625-386,481.12

Finding the Fourth Proportional to 658,401.36, 908,625 and 386,481.12

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Solution

The fourth proportional to 658,401.36, 908,625 and 386,481.12 is: 533,362.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,401.36 : 908,625 = 386,481.12 : x
  2. Step 2: Convert to fraction form
    658,401.36/908,625 = 386,481.12/x
  3. Step 3: Cross multiply
    658,401.36x = 908,625 × 386,481.12
  4. Step 4: Simplify right side
    658,401.36x = 351,166,407,660
  5. Step 5: Solve for x
    x = 351,166,407,660/658,401.36
  6. Step 6: Final answer
    x = 533,362.21

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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.