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Finding the Fourth Proportional to 575,505.32, 862,940.46 and 309,190.28

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Solution

The fourth proportional to 575,505.32, 862,940.46 and 309,190.28 is: 463,614.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,505.32 : 862,940.46 = 309,190.28 : x
  2. Step 2: Convert to fraction form
    575,505.32/862,940.46 = 309,190.28/x
  3. Step 3: Cross multiply
    575,505.32x = 862,940.46 × 309,190.28
  4. Step 4: Simplify right side
    575,505.32x = 266,812,802,450.73
  5. Step 5: Solve for x
    x = 266,812,802,450.73/575,505.32
  6. Step 6: Final answer
    x = 463,614.83

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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.