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Finding the Fourth Proportional to 456,369.96, 629,597.70 and 305,515.56

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Solution

The fourth proportional to 456,369.96, 629,597.70 and 305,515.56 is: 421,482.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,369.96 : 629,597.70 = 305,515.56 : x
  2. Step 2: Convert to fraction form
    456,369.96/629,597.70 = 305,515.56/x
  3. Step 3: Cross multiply
    456,369.96x = 629,597.70 × 305,515.56
  4. Step 4: Simplify right side
    456,369.96x = 192,351,893,890.21
  5. Step 5: Solve for x
    x = 192,351,893,890.21/456,369.96
  6. Step 6: Final answer
    x = 421,482.37

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1.5x scale

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.