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Finding the Fourth Proportional to 542,990.20, 814,485.30 and 500,999.80

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Solution

The fourth proportional to 542,990.20, 814,485.30 and 500,999.80 is: 751,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,990.20 : 814,485.30 = 500,999.80 : x
  2. Step 2: Convert to fraction form
    542,990.20/814,485.30 = 500,999.80/x
  3. Step 3: Cross multiply
    542,990.20x = 814,485.30 × 500,999.80
  4. Step 4: Simplify right side
    542,990.20x = 408,056,972,402.94
  5. Step 5: Solve for x
    x = 408,056,972,402.94/542,990.20
  6. Step 6: Final answer
    x = 751,499.70

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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.