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Finding the Fourth Proportional to 649,693.64, 896,579.21 and 363,213.72

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Solution

The fourth proportional to 649,693.64, 896,579.21 and 363,213.72 is: 501,236.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,693.64 : 896,579.21 = 363,213.72 : x
  2. Step 2: Convert to fraction form
    649,693.64/896,579.21 = 363,213.72/x
  3. Step 3: Cross multiply
    649,693.64x = 896,579.21 × 363,213.72
  4. Step 4: Simplify right side
    649,693.64x = 325,649,871,046.80
  5. Step 5: Solve for x
    x = 325,649,871,046.80/649,693.64
  6. Step 6: Final answer
    x = 501,236.04

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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.