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Finding the Fourth Proportional to 520,372.53, 780,854.07 and 205,050.87

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Solution

The fourth proportional to 520,372.53, 780,854.07 and 205,050.87 is: 307,692.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,372.53 : 780,854.07 = 205,050.87 : x
  2. Step 2: Convert to fraction form
    520,372.53/780,854.07 = 205,050.87/x
  3. Step 3: Cross multiply
    520,372.53x = 780,854.07 × 205,050.87
  4. Step 4: Simplify right side
    520,372.53x = 160,114,806,396.54
  5. Step 5: Solve for x
    x = 160,114,806,396.54/520,372.53
  6. Step 6: Final answer
    x = 307,692.66

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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.