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Finding the Fourth Proportional to 389,340, 536,802.39 and 324,902.07

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Solution

The fourth proportional to 389,340, 536,802.39 and 324,902.07 is: 447,958.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,340 : 536,802.39 = 324,902.07 : x
  2. Step 2: Convert to fraction form
    389,340/536,802.39 = 324,902.07/x
  3. Step 3: Cross multiply
    389,340x = 536,802.39 × 324,902.07
  4. Step 4: Simplify right side
    389,340x = 174,408,207,691.95
  5. Step 5: Solve for x
    x = 174,408,207,691.95/389,340
  6. Step 6: Final answer
    x = 447,958.62

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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.