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Finding the Fourth Proportional to 640,484.21, 883,871.69 and 350,096.17

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Solution

The fourth proportional to 640,484.21, 883,871.69 and 350,096.17 is: 483,134.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,484.21 : 883,871.69 = 350,096.17 : x
  2. Step 2: Convert to fraction form
    640,484.21/883,871.69 = 350,096.17/x
  3. Step 3: Cross multiply
    640,484.21x = 883,871.69 × 350,096.17
  4. Step 4: Simplify right side
    640,484.21x = 309,440,093,440.43
  5. Step 5: Solve for x
    x = 309,440,093,440.43/640,484.21
  6. Step 6: Final answer
    x = 483,134.62

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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.