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Finding the Fourth Proportional to 406,520.54, 606,880.63 and 379,505.56

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Solution

The fourth proportional to 406,520.54, 606,880.63 and 379,505.56 is: 566,550.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,520.54 : 606,880.63 = 379,505.56 : x
  2. Step 2: Convert to fraction form
    406,520.54/606,880.63 = 379,505.56/x
  3. Step 3: Cross multiply
    406,520.54x = 606,880.63 × 379,505.56
  4. Step 4: Simplify right side
    406,520.54x = 230,314,573,341.30
  5. Step 5: Solve for x
    x = 230,314,573,341.30/406,520.54
  6. Step 6: Final answer
    x = 566,550.89

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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.