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Finding the Fourth Proportional to 606,492.20, 908,426.10 and 393,915.80

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Solution

The fourth proportional to 606,492.20, 908,426.10 and 393,915.80 is: 590,021.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,492.20 : 908,426.10 = 393,915.80 : x
  2. Step 2: Convert to fraction form
    606,492.20/908,426.10 = 393,915.80/x
  3. Step 3: Cross multiply
    606,492.20x = 908,426.10 × 393,915.80
  4. Step 4: Simplify right side
    606,492.20x = 357,843,393,922.38
  5. Step 5: Solve for x
    x = 357,843,393,922.38/606,492.20
  6. Step 6: Final answer
    x = 590,021.43

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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.