Home / 556,647,928.31-768,307,928.15-318,631,087.80

Finding the Fourth Proportional to 556,647,928.31, 768,307,928.15 and 318,631,087.80

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Solution

The fourth proportional to 556,647,928.31, 768,307,928.15 and 318,631,087.80 is: 439,787,482.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,647,928.31 : 768,307,928.15 = 318,631,087.80 : x
  2. Step 2: Convert to fraction form
    556,647,928.31/768,307,928.15 = 318,631,087.80/x
  3. Step 3: Cross multiply
    556,647,928.31x = 768,307,928.15 × 318,631,087.80
  4. Step 4: Simplify right side
    556,647,928.31x = 244,806,790,912,595,328
  5. Step 5: Solve for x
    x = 244,806,790,912,595,328/556,647,928.31
  6. Step 6: Final answer
    x = 439,787,482.29

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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.