Home / 790,889.05-1,091,413.40-428,309.97

Finding the Fourth Proportional to 790,889.05, 1,091,413.40 and 428,309.97

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Solution

The fourth proportional to 790,889.05, 1,091,413.40 and 428,309.97 is: 591,060.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,889.05 : 1,091,413.40 = 428,309.97 : x
  2. Step 2: Convert to fraction form
    790,889.05/1,091,413.40 = 428,309.97/x
  3. Step 3: Cross multiply
    790,889.05x = 1,091,413.40 × 428,309.97
  4. Step 4: Simplify right side
    790,889.05x = 467,463,240,611.60
  5. Step 5: Solve for x
    x = 467,463,240,611.60/790,889.05
  6. Step 6: Final answer
    x = 591,060.45

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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.