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Finding the Fourth Proportional to 630,376.72, 869,902.64 and 343,896.73

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Solution

The fourth proportional to 630,376.72, 869,902.64 and 343,896.73 is: 474,568.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,376.72 : 869,902.64 = 343,896.73 : x
  2. Step 2: Convert to fraction form
    630,376.72/869,902.64 = 343,896.73/x
  3. Step 3: Cross multiply
    630,376.72x = 869,902.64 × 343,896.73
  4. Step 4: Simplify right side
    630,376.72x = 299,156,671,999.35
  5. Step 5: Solve for x
    x = 299,156,671,999.35/630,376.72
  6. Step 6: Final answer
    x = 474,568.09

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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.