Home / 782,925,500.22-1,080,475,975.95-485,663,520.17

Finding the Fourth Proportional to 782,925,500.22, 1,080,475,975.95 and 485,663,520.17

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Solution

The fourth proportional to 782,925,500.22, 1,080,475,975.95 and 485,663,520.17 is: 670,239,717.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,925,500.22 : 1,080,475,975.95 = 485,663,520.17 : x
  2. Step 2: Convert to fraction form
    782,925,500.22/1,080,475,975.95 = 485,663,520.17/x
  3. Step 3: Cross multiply
    782,925,500.22x = 1,080,475,975.95 × 485,663,520.17
  4. Step 4: Simplify right side
    782,925,500.22x = 524,747,765,933,590,912
  5. Step 5: Solve for x
    x = 524,747,765,933,590,912/782,925,500.22
  6. Step 6: Final answer
    x = 670,239,717.30

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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.