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Finding the Fourth Proportional to 561,748.87, 775,157.74 and 320,017.04

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Solution

The fourth proportional to 561,748.87, 775,157.74 and 320,017.04 is: 441,591.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,748.87 : 775,157.74 = 320,017.04 : x
  2. Step 2: Convert to fraction form
    561,748.87/775,157.74 = 320,017.04/x
  3. Step 3: Cross multiply
    561,748.87x = 775,157.74 × 320,017.04
  4. Step 4: Simplify right side
    561,748.87x = 248,063,680,812.06
  5. Step 5: Solve for x
    x = 248,063,680,812.06/561,748.87
  6. Step 6: Final answer
    x = 441,591.78

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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.