Home / 781,810,163.69-1,172,859,415.83-257,208,790.73

Finding the Fourth Proportional to 781,810,163.69, 1,172,859,415.83 and 257,208,790.73

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Solution

The fourth proportional to 781,810,163.69, 1,172,859,415.83 and 257,208,790.73 is: 385,860,616.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,810,163.69 : 1,172,859,415.83 = 257,208,790.73 : x
  2. Step 2: Convert to fraction form
    781,810,163.69/1,172,859,415.83 = 257,208,790.73/x
  3. Step 3: Cross multiply
    781,810,163.69x = 1,172,859,415.83 × 257,208,790.73
  4. Step 4: Simplify right side
    781,810,163.69x = 301,669,752,036,064,192
  5. Step 5: Solve for x
    x = 301,669,752,036,064,192/781,810,163.69
  6. Step 6: Final answer
    x = 385,860,616.87

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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.