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Finding the Fourth Proportional to 630,154.10, 945,231.15 and 551,422.10

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Solution

The fourth proportional to 630,154.10, 945,231.15 and 551,422.10 is: 827,133.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,154.10 : 945,231.15 = 551,422.10 : x
  2. Step 2: Convert to fraction form
    630,154.10/945,231.15 = 551,422.10/x
  3. Step 3: Cross multiply
    630,154.10x = 945,231.15 × 551,422.10
  4. Step 4: Simplify right side
    630,154.10x = 521,221,345,718.42
  5. Step 5: Solve for x
    x = 521,221,345,718.42/630,154.10
  6. Step 6: Final answer
    x = 827,133.15

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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.