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Finding the Fourth Proportional to 561,696.40, 843,322.20 and 443,501.20

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Solution

The fourth proportional to 561,696.40, 843,322.20 and 443,501.20 is: 665,865.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,696.40 : 843,322.20 = 443,501.20 : x
  2. Step 2: Convert to fraction form
    561,696.40/843,322.20 = 443,501.20/x
  3. Step 3: Cross multiply
    561,696.40x = 843,322.20 × 443,501.20
  4. Step 4: Simplify right side
    561,696.40x = 374,014,407,686.64
  5. Step 5: Solve for x
    x = 374,014,407,686.64/561,696.40
  6. Step 6: Final answer
    x = 665,865.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.