Home / 630,040,276.80-945,060,415.20-408,110,515.20

Finding the Fourth Proportional to 630,040,276.80, 945,060,415.20 and 408,110,515.20

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Solution

The fourth proportional to 630,040,276.80, 945,060,415.20 and 408,110,515.20 is: 612,165,772.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,040,276.80 : 945,060,415.20 = 408,110,515.20 : x
  2. Step 2: Convert to fraction form
    630,040,276.80/945,060,415.20 = 408,110,515.20/x
  3. Step 3: Cross multiply
    630,040,276.80x = 945,060,415.20 × 408,110,515.20
  4. Step 4: Simplify right side
    630,040,276.80x = 385,689,092,942,397,888
  5. Step 5: Solve for x
    x = 385,689,092,942,397,888/630,040,276.80
  6. Step 6: Final answer
    x = 612,165,772.80

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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.