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Finding the Fourth Proportional to 394,331.40, 591,497.10 and 347,675.40

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Solution

The fourth proportional to 394,331.40, 591,497.10 and 347,675.40 is: 521,513.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,331.40 : 591,497.10 = 347,675.40 : x
  2. Step 2: Convert to fraction form
    394,331.40/591,497.10 = 347,675.40/x
  3. Step 3: Cross multiply
    394,331.40x = 591,497.10 × 347,675.40
  4. Step 4: Simplify right side
    394,331.40x = 205,648,990,841.34
  5. Step 5: Solve for x
    x = 205,648,990,841.34/394,331.40
  6. Step 6: Final answer
    x = 521,513.10

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1.5x scale

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.