Home / 419,905,538.60-629,858,307.90-215,832,194.60

Finding the Fourth Proportional to 419,905,538.60, 629,858,307.90 and 215,832,194.60

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Solution

The fourth proportional to 419,905,538.60, 629,858,307.90 and 215,832,194.60 is: 323,748,291.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,905,538.60 : 629,858,307.90 = 215,832,194.60 : x
  2. Step 2: Convert to fraction form
    419,905,538.60/629,858,307.90 = 215,832,194.60/x
  3. Step 3: Cross multiply
    419,905,538.60x = 629,858,307.90 × 215,832,194.60
  4. Step 4: Simplify right side
    419,905,538.60x = 135,943,700,881,099,504
  5. Step 5: Solve for x
    x = 135,943,700,881,099,504/419,905,538.60
  6. Step 6: Final answer
    x = 323,748,291.90

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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.