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Finding the Fourth Proportional to 640,682.24, 884,144.96 and 350,294.72

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Solution

The fourth proportional to 640,682.24, 884,144.96 and 350,294.72 is: 483,408.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,682.24 : 884,144.96 = 350,294.72 : x
  2. Step 2: Convert to fraction form
    640,682.24/884,144.96 = 350,294.72/x
  3. Step 3: Cross multiply
    640,682.24x = 884,144.96 × 350,294.72
  4. Step 4: Simplify right side
    640,682.24x = 309,711,311,202.61
  5. Step 5: Solve for x
    x = 309,711,311,202.61/640,682.24
  6. Step 6: Final answer
    x = 483,408.61

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1.5x scale

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.