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Finding the Fourth Proportional to 551,504.96, 761,047.62 and 309,797.72

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Solution

The fourth proportional to 551,504.96, 761,047.62 and 309,797.72 is: 427,504.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,504.96 : 761,047.62 = 309,797.72 : x
  2. Step 2: Convert to fraction form
    551,504.96/761,047.62 = 309,797.72/x
  3. Step 3: Cross multiply
    551,504.96x = 761,047.62 × 309,797.72
  4. Step 4: Simplify right side
    551,504.96x = 235,770,817,487.43
  5. Step 5: Solve for x
    x = 235,770,817,487.43/551,504.96
  6. Step 6: Final answer
    x = 427,504.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.