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Finding the Fourth Proportional to 409,403.20, 614,104.80 and 304,427.20

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Solution

The fourth proportional to 409,403.20, 614,104.80 and 304,427.20 is: 456,640.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,403.20 : 614,104.80 = 304,427.20 : x
  2. Step 2: Convert to fraction form
    409,403.20/614,104.80 = 304,427.20/x
  3. Step 3: Cross multiply
    409,403.20x = 614,104.80 × 304,427.20
  4. Step 4: Simplify right side
    409,403.20x = 186,950,204,770.56
  5. Step 5: Solve for x
    x = 186,950,204,770.56/409,403.20
  6. Step 6: Final answer
    x = 456,640.80

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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.