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Finding the Fourth Proportional to 613,115.05, 919,404.46 and 309,322.30

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Solution

The fourth proportional to 613,115.05, 919,404.46 and 309,322.30 is: 463,848.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,115.05 : 919,404.46 = 309,322.30 : x
  2. Step 2: Convert to fraction form
    613,115.05/919,404.46 = 309,322.30/x
  3. Step 3: Cross multiply
    613,115.05x = 919,404.46 × 309,322.30
  4. Step 4: Simplify right side
    613,115.05x = 284,392,296,053.82
  5. Step 5: Solve for x
    x = 284,392,296,053.82/613,115.05
  6. Step 6: Final answer
    x = 463,848.18

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1.5x scale

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.