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Finding the Fourth Proportional to 481,000.76, 664,173.42 and 309,004.14

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Solution

The fourth proportional to 481,000.76, 664,173.42 and 309,004.14 is: 426,677.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,000.76 : 664,173.42 = 309,004.14 : x
  2. Step 2: Convert to fraction form
    481,000.76/664,173.42 = 309,004.14/x
  3. Step 3: Cross multiply
    481,000.76x = 664,173.42 × 309,004.14
  4. Step 4: Simplify right side
    481,000.76x = 205,232,336,457.96
  5. Step 5: Solve for x
    x = 205,232,336,457.96/481,000.76
  6. Step 6: Final answer
    x = 426,677.78

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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.