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Finding the Fourth Proportional to 532,161.38, 734,993.66 and 387,611.21

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Solution

The fourth proportional to 532,161.38, 734,993.66 and 387,611.21 is: 535,348.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,161.38 : 734,993.66 = 387,611.21 : x
  2. Step 2: Convert to fraction form
    532,161.38/734,993.66 = 387,611.21/x
  3. Step 3: Cross multiply
    532,161.38x = 734,993.66 × 387,611.21
  4. Step 4: Simplify right side
    532,161.38x = 284,891,781,894.93
  5. Step 5: Solve for x
    x = 284,891,781,894.93/532,161.38
  6. Step 6: Final answer
    x = 535,348.47

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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.