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Finding the Fourth Proportional to 640,497.70, 883,905.61 and 350,125.30

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Solution

The fourth proportional to 640,497.70, 883,905.61 and 350,125.30 is: 483,183.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,497.70 : 883,905.61 = 350,125.30 : x
  2. Step 2: Convert to fraction form
    640,497.70/883,905.61 = 350,125.30/x
  3. Step 3: Cross multiply
    640,497.70x = 883,905.61 × 350,125.30
  4. Step 4: Simplify right side
    640,497.70x = 309,477,713,787.86
  5. Step 5: Solve for x
    x = 309,477,713,787.86/640,497.70
  6. Step 6: Final answer
    x = 483,183.18

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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.