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Finding the Fourth Proportional to 603,669.42, 905,342.13 and 287,497.26

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Solution

The fourth proportional to 603,669.42, 905,342.13 and 287,497.26 is: 431,168.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,669.42 : 905,342.13 = 287,497.26 : x
  2. Step 2: Convert to fraction form
    603,669.42/905,342.13 = 287,497.26/x
  3. Step 3: Cross multiply
    603,669.42x = 905,342.13 × 287,497.26
  4. Step 4: Simplify right side
    603,669.42x = 260,283,381,737.56
  5. Step 5: Solve for x
    x = 260,283,381,737.56/603,669.42
  6. Step 6: Final answer
    x = 431,168.74

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1.5x scale

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.