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Finding the Fourth Proportional to 561,861.46, 775,579.66 and 368,281.64

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Solution

The fourth proportional to 561,861.46, 775,579.66 and 368,281.64 is: 508,366.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,861.46 : 775,579.66 = 368,281.64 : x
  2. Step 2: Convert to fraction form
    561,861.46/775,579.66 = 368,281.64/x
  3. Step 3: Cross multiply
    561,861.46x = 775,579.66 × 368,281.64
  4. Step 4: Simplify right side
    561,861.46x = 285,631,749,135.44
  5. Step 5: Solve for x
    x = 285,631,749,135.44/561,861.46
  6. Step 6: Final answer
    x = 508,366.87

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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.