Home / 556,647,930.32-768,307,930.92-318,631,089.80

Finding the Fourth Proportional to 556,647,930.32, 768,307,930.92 and 318,631,089.80

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Solution

The fourth proportional to 556,647,930.32, 768,307,930.92 and 318,631,089.80 is: 439,787,485.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,647,930.32 : 768,307,930.92 = 318,631,089.80 : x
  2. Step 2: Convert to fraction form
    556,647,930.32/768,307,930.92 = 318,631,089.80/x
  3. Step 3: Cross multiply
    556,647,930.32x = 768,307,930.92 × 318,631,089.80
  4. Step 4: Simplify right side
    556,647,930.32x = 244,806,793,331,022,720
  5. Step 5: Solve for x
    x = 244,806,793,331,022,720/556,647,930.32
  6. Step 6: Final answer
    x = 439,787,485.05

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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.