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Finding the Fourth Proportional to 503,403.26, 694,953.57 and 388,423.55

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Solution

The fourth proportional to 503,403.26, 694,953.57 and 388,423.55 is: 536,222.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,403.26 : 694,953.57 = 388,423.55 : x
  2. Step 2: Convert to fraction form
    503,403.26/694,953.57 = 388,423.55/x
  3. Step 3: Cross multiply
    503,403.26x = 694,953.57 × 388,423.55
  4. Step 4: Simplify right side
    503,403.26x = 269,936,335,938.55
  5. Step 5: Solve for x
    x = 269,936,335,938.55/503,403.26
  6. Step 6: Final answer
    x = 536,222.87

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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.