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Finding the Fourth Proportional to 630,170.60, 945,255.90 and 551,438.60

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Solution

The fourth proportional to 630,170.60, 945,255.90 and 551,438.60 is: 827,157.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,170.60 : 945,255.90 = 551,438.60 : x
  2. Step 2: Convert to fraction form
    630,170.60/945,255.90 = 551,438.60/x
  3. Step 3: Cross multiply
    630,170.60x = 945,255.90 × 551,438.60
  4. Step 4: Simplify right side
    630,170.60x = 521,250,590,137.74
  5. Step 5: Solve for x
    x = 521,250,590,137.74/630,170.60
  6. Step 6: Final answer
    x = 827,157.90

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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.