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Finding the Fourth Proportional to 450,361.63, 620,784.43 and 354,716.83

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Solution

The fourth proportional to 450,361.63, 620,784.43 and 354,716.83 is: 488,946.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,361.63 : 620,784.43 = 354,716.83 : x
  2. Step 2: Convert to fraction form
    450,361.63/620,784.43 = 354,716.83/x
  3. Step 3: Cross multiply
    450,361.63x = 620,784.43 × 354,716.83
  4. Step 4: Simplify right side
    450,361.63x = 220,202,685,122.96
  5. Step 5: Solve for x
    x = 220,202,685,122.96/450,361.63
  6. Step 6: Final answer
    x = 488,946.37

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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.