Home / 791,840.80-1,187,750.40-259,379.20

Finding the Fourth Proportional to 791,840.80, 1,187,750.40 and 259,379.20

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Solution

The fourth proportional to 791,840.80, 1,187,750.40 and 259,379.20 is: 389,065.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,840.80 : 1,187,750.40 = 259,379.20 : x
  2. Step 2: Convert to fraction form
    791,840.80/1,187,750.40 = 259,379.20/x
  3. Step 3: Cross multiply
    791,840.80x = 1,187,750.40 × 259,379.20
  4. Step 4: Simplify right side
    791,840.80x = 308,077,748,551.68
  5. Step 5: Solve for x
    x = 308,077,748,551.68/791,840.80
  6. Step 6: Final answer
    x = 389,065.26

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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.