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Finding the Fourth Proportional to 507,487.80, 761,231.70 and 254,670.60

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Solution

The fourth proportional to 507,487.80, 761,231.70 and 254,670.60 is: 382,005.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,487.80 : 761,231.70 = 254,670.60 : x
  2. Step 2: Convert to fraction form
    507,487.80/761,231.70 = 254,670.60/x
  3. Step 3: Cross multiply
    507,487.80x = 761,231.70 × 254,670.60
  4. Step 4: Simplify right side
    507,487.80x = 193,863,333,778.02
  5. Step 5: Solve for x
    x = 193,863,333,778.02/507,487.80
  6. Step 6: Final answer
    x = 382,005.90

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Double scale
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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.