Home / 813,190.80-1,218,911.40-307,556.40

Finding the Fourth Proportional to 813,190.80, 1,218,911.40 and 307,556.40

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Solution

The fourth proportional to 813,190.80, 1,218,911.40 and 307,556.40 is: 461,003.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,190.80 : 1,218,911.40 = 307,556.40 : x
  2. Step 2: Convert to fraction form
    813,190.80/1,218,911.40 = 307,556.40/x
  3. Step 3: Cross multiply
    813,190.80x = 1,218,911.40 × 307,556.40
  4. Step 4: Simplify right side
    813,190.80x = 374,884,002,102.96
  5. Step 5: Solve for x
    x = 374,884,002,102.96/813,190.80
  6. Step 6: Final answer
    x = 461,003.74

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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.