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Finding the Fourth Proportional to 545,996.80, 818,995.20 and 404,279.20

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Solution

The fourth proportional to 545,996.80, 818,995.20 and 404,279.20 is: 606,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,996.80 : 818,995.20 = 404,279.20 : x
  2. Step 2: Convert to fraction form
    545,996.80/818,995.20 = 404,279.20/x
  3. Step 3: Cross multiply
    545,996.80x = 818,995.20 × 404,279.20
  4. Step 4: Simplify right side
    545,996.80x = 331,102,724,259.84
  5. Step 5: Solve for x
    x = 331,102,724,259.84/545,996.80
  6. Step 6: Final answer
    x = 606,418.80

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Similar ratio
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1.5x scale

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.