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Finding the Fourth Proportional to 603,742.37, 832,286.57 and 421,889.90

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Solution

The fourth proportional to 603,742.37, 832,286.57 and 421,889.90 is: 581,594.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,742.37 : 832,286.57 = 421,889.90 : x
  2. Step 2: Convert to fraction form
    603,742.37/832,286.57 = 421,889.90/x
  3. Step 3: Cross multiply
    603,742.37x = 832,286.57 × 421,889.90
  4. Step 4: Simplify right side
    603,742.37x = 351,133,291,517.76
  5. Step 5: Solve for x
    x = 351,133,291,517.76/603,742.37
  6. Step 6: Final answer
    x = 581,594.59

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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.