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Finding the Fourth Proportional to 456,373.09, 629,602.01 and 305,518.69

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Solution

The fourth proportional to 456,373.09, 629,602.01 and 305,518.69 is: 421,486.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,373.09 : 629,602.01 = 305,518.69 : x
  2. Step 2: Convert to fraction form
    456,373.09/629,602.01 = 305,518.69/x
  3. Step 3: Cross multiply
    456,373.09x = 629,602.01 × 305,518.69
  4. Step 4: Simplify right side
    456,373.09x = 192,355,178,168.56
  5. Step 5: Solve for x
    x = 192,355,178,168.56/456,373.09
  6. Step 6: Final answer
    x = 421,486.68

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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.