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Finding the Fourth Proportional to 511,203.80, 766,805.70 and 361,904.60

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Solution

The fourth proportional to 511,203.80, 766,805.70 and 361,904.60 is: 542,856.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,203.80 : 766,805.70 = 361,904.60 : x
  2. Step 2: Convert to fraction form
    511,203.80/766,805.70 = 361,904.60/x
  3. Step 3: Cross multiply
    511,203.80x = 766,805.70 × 361,904.60
  4. Step 4: Simplify right side
    511,203.80x = 277,510,510,136.22
  5. Step 5: Solve for x
    x = 277,510,510,136.22/511,203.80
  6. Step 6: Final answer
    x = 542,856.90

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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.