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Finding the Fourth Proportional to 662,409.78, 993,593.61 and 394,376.46

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Solution

The fourth proportional to 662,409.78, 993,593.61 and 394,376.46 is: 591,552.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,409.78 : 993,593.61 = 394,376.46 : x
  2. Step 2: Convert to fraction form
    662,409.78/993,593.61 = 394,376.46/x
  3. Step 3: Cross multiply
    662,409.78x = 993,593.61 × 394,376.46
  4. Step 4: Simplify right side
    662,409.78x = 391,849,930,590.42
  5. Step 5: Solve for x
    x = 391,849,930,590.42/662,409.78
  6. Step 6: Final answer
    x = 591,552.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.