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Finding the Fourth Proportional to 603,722.55, 905,693.18 and 303,447.45

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Solution

The fourth proportional to 603,722.55, 905,693.18 and 303,447.45 is: 455,226.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,722.55 : 905,693.18 = 303,447.45 : x
  2. Step 2: Convert to fraction form
    603,722.55/905,693.18 = 303,447.45/x
  3. Step 3: Cross multiply
    603,722.55x = 905,693.18 × 303,447.45
  4. Step 4: Simplify right side
    603,722.55x = 274,830,284,436.15
  5. Step 5: Solve for x
    x = 274,830,284,436.15/603,722.55
  6. Step 6: Final answer
    x = 455,226.14

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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.