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Finding the Fourth Proportional to 406,515.10, 606,872.51 and 379,500.12

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Solution

The fourth proportional to 406,515.10, 606,872.51 and 379,500.12 is: 566,542.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,515.10 : 606,872.51 = 379,500.12 : x
  2. Step 2: Convert to fraction form
    406,515.10/606,872.51 = 379,500.12/x
  3. Step 3: Cross multiply
    406,515.10x = 606,872.51 × 379,500.12
  4. Step 4: Simplify right side
    406,515.10x = 230,308,190,369.70
  5. Step 5: Solve for x
    x = 230,308,190,369.70/406,515.10
  6. Step 6: Final answer
    x = 566,542.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.