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Finding the Fourth Proportional to 408,582,003.70, 612,873,005.55 and 370,958,605.30

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Solution

The fourth proportional to 408,582,003.70, 612,873,005.55 and 370,958,605.30 is: 556,437,907.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,582,003.70 : 612,873,005.55 = 370,958,605.30 : x
  2. Step 2: Convert to fraction form
    408,582,003.70/612,873,005.55 = 370,958,605.30/x
  3. Step 3: Cross multiply
    408,582,003.70x = 612,873,005.55 × 370,958,605.30
  4. Step 4: Simplify right side
    408,582,003.70x = 227,350,515,364,847,136
  5. Step 5: Solve for x
    x = 227,350,515,364,847,136/408,582,003.70
  6. Step 6: Final answer
    x = 556,437,907.95

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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.