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Finding the Fourth Proportional to 459,000.66, 688,617.78 and 269,621.19

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Solution

The fourth proportional to 459,000.66, 688,617.78 and 269,621.19 is: 404,500.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,000.66 : 688,617.78 = 269,621.19 : x
  2. Step 2: Convert to fraction form
    459,000.66/688,617.78 = 269,621.19/x
  3. Step 3: Cross multiply
    459,000.66x = 688,617.78 × 269,621.19
  4. Step 4: Simplify right side
    459,000.66x = 185,665,940,507.56
  5. Step 5: Solve for x
    x = 185,665,940,507.56/459,000.66
  6. Step 6: Final answer
    x = 404,500.38

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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.