Home / 491,474,559.40-678,230,306.96-268,456,155.68

Finding the Fourth Proportional to 491,474,559.40, 678,230,306.96 and 268,456,155.68

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Solution

The fourth proportional to 491,474,559.40, 678,230,306.96 and 268,456,155.68 is: 370,466,990.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,474,559.40 : 678,230,306.96 = 268,456,155.68 : x
  2. Step 2: Convert to fraction form
    491,474,559.40/678,230,306.96 = 268,456,155.68/x
  3. Step 3: Cross multiply
    491,474,559.40x = 678,230,306.96 × 268,456,155.68
  4. Step 4: Simplify right side
    491,474,559.40x = 182,075,100,872,147,968
  5. Step 5: Solve for x
    x = 182,075,100,872,147,968/491,474,559.40
  6. Step 6: Final answer
    x = 370,466,990.39

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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.