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Finding the Fourth Proportional to 516,679.20, 775,040.40 and 276,692.40

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Solution

The fourth proportional to 516,679.20, 775,040.40 and 276,692.40 is: 415,050.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,679.20 : 775,040.40 = 276,692.40 : x
  2. Step 2: Convert to fraction form
    516,679.20/775,040.40 = 276,692.40/x
  3. Step 3: Cross multiply
    516,679.20x = 775,040.40 × 276,692.40
  4. Step 4: Simplify right side
    516,679.20x = 214,447,788,372.96
  5. Step 5: Solve for x
    x = 214,447,788,372.96/516,679.20
  6. Step 6: Final answer
    x = 415,050.17

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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.