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Finding the Fourth Proportional to 505,013.76, 696,914.96 and 275,565.87

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Solution

The fourth proportional to 505,013.76, 696,914.96 and 275,565.87 is: 380,278.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,013.76 : 696,914.96 = 275,565.87 : x
  2. Step 2: Convert to fraction form
    505,013.76/696,914.96 = 275,565.87/x
  3. Step 3: Cross multiply
    505,013.76x = 696,914.96 × 275,565.87
  4. Step 4: Simplify right side
    505,013.76x = 192,045,975,890.59
  5. Step 5: Solve for x
    x = 192,045,975,890.59/505,013.76
  6. Step 6: Final answer
    x = 380,278.70

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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.