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Finding the Fourth Proportional to 630,219.10, 945,328.65 and 551,487.10

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Solution

The fourth proportional to 630,219.10, 945,328.65 and 551,487.10 is: 827,230.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,219.10 : 945,328.65 = 551,487.10 : x
  2. Step 2: Convert to fraction form
    630,219.10/945,328.65 = 551,487.10/x
  3. Step 3: Cross multiply
    630,219.10x = 945,328.65 × 551,487.10
  4. Step 4: Simplify right side
    630,219.10x = 521,336,555,735.42
  5. Step 5: Solve for x
    x = 521,336,555,735.42/630,219.10
  6. Step 6: Final answer
    x = 827,230.65

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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.