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Finding the Fourth Proportional to 603,672.42, 905,346.63 and 287,500.26

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Solution

The fourth proportional to 603,672.42, 905,346.63 and 287,500.26 is: 431,173.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,672.42 : 905,346.63 = 287,500.26 : x
  2. Step 2: Convert to fraction form
    603,672.42/905,346.63 = 287,500.26/x
  3. Step 3: Cross multiply
    603,672.42x = 905,346.63 × 287,500.26
  4. Step 4: Simplify right side
    603,672.42x = 260,287,391,515.12
  5. Step 5: Solve for x
    x = 260,287,391,515.12/603,672.42
  6. Step 6: Final answer
    x = 431,173.24

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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.