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Finding the Fourth Proportional to 620,855.21, 931,934.36 and 550,229.69

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Solution

The fourth proportional to 620,855.21, 931,934.36 and 550,229.69 is: 825,921.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,855.21 : 931,934.36 = 550,229.69 : x
  2. Step 2: Convert to fraction form
    620,855.21/931,934.36 = 550,229.69/x
  3. Step 3: Cross multiply
    620,855.21x = 931,934.36 × 550,229.69
  4. Step 4: Simplify right side
    620,855.21x = 512,777,946,592.33
  5. Step 5: Solve for x
    x = 512,777,946,592.33/620,855.21
  6. Step 6: Final answer
    x = 825,921.96

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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.