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Finding the Fourth Proportional to 625,615.38, 938,657.97 and 288,817.38

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Solution

The fourth proportional to 625,615.38, 938,657.97 and 288,817.38 is: 433,334.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,615.38 : 938,657.97 = 288,817.38 : x
  2. Step 2: Convert to fraction form
    625,615.38/938,657.97 = 288,817.38/x
  3. Step 3: Cross multiply
    625,615.38x = 938,657.97 × 288,817.38
  4. Step 4: Simplify right side
    625,615.38x = 271,100,735,611.52
  5. Step 5: Solve for x
    x = 271,100,735,611.52/625,615.38
  6. Step 6: Final answer
    x = 433,334.51

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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.