Home / 810,021.40-1,213,719.90-691,923.40

Finding the Fourth Proportional to 810,021.40, 1,213,719.90 and 691,923.40

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Solution

The fourth proportional to 810,021.40, 1,213,719.90 and 691,923.40 is: 1,036,764.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,021.40 : 1,213,719.90 = 691,923.40 : x
  2. Step 2: Convert to fraction form
    810,021.40/1,213,719.90 = 691,923.40/x
  3. Step 3: Cross multiply
    810,021.40x = 1,213,719.90 × 691,923.40
  4. Step 4: Simplify right side
    810,021.40x = 839,801,199,855.66
  5. Step 5: Solve for x
    x = 839,801,199,855.66/810,021.40
  6. Step 6: Final answer
    x = 1,036,764.21

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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.