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Finding the Fourth Proportional to 540,610.50, 810,128.42 and 259,799.70

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Solution

The fourth proportional to 540,610.50, 810,128.42 and 259,799.70 is: 389,321.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,610.50 : 810,128.42 = 259,799.70 : x
  2. Step 2: Convert to fraction form
    540,610.50/810,128.42 = 259,799.70/x
  3. Step 3: Cross multiply
    540,610.50x = 810,128.42 × 259,799.70
  4. Step 4: Simplify right side
    540,610.50x = 210,471,120,477.47
  5. Step 5: Solve for x
    x = 210,471,120,477.47/540,610.50
  6. Step 6: Final answer
    x = 389,321.18

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1.5x scale

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.