Home / 421,015,050.44-631,515,413.10-125,910,845

Finding the Fourth Proportional to 421,015,050.44, 631,515,413.10 and 125,910,845

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Solution

The fourth proportional to 421,015,050.44, 631,515,413.10 and 125,910,845 is: 188,864,125.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,015,050.44 : 631,515,413.10 = 125,910,845 : x
  2. Step 2: Convert to fraction form
    421,015,050.44/631,515,413.10 = 125,910,845/x
  3. Step 3: Cross multiply
    421,015,050.44x = 631,515,413.10 × 125,910,845
  4. Step 4: Simplify right side
    421,015,050.44x = 79,514,639,293,945,072
  5. Step 5: Solve for x
    x = 79,514,639,293,945,072/421,015,050.44
  6. Step 6: Final answer
    x = 188,864,125.43

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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.