Home / 754,143.21-1,040,421.51-431,679.78

Finding the Fourth Proportional to 754,143.21, 1,040,421.51 and 431,679.78

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Solution

The fourth proportional to 754,143.21, 1,040,421.51 and 431,679.78 is: 595,548.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    754,143.21 : 1,040,421.51 = 431,679.78 : x
  2. Step 2: Convert to fraction form
    754,143.21/1,040,421.51 = 431,679.78/x
  3. Step 3: Cross multiply
    754,143.21x = 1,040,421.51 × 431,679.78
  4. Step 4: Simplify right side
    754,143.21x = 449,128,928,544.07
  5. Step 5: Solve for x
    x = 449,128,928,544.07/754,143.21
  6. Step 6: Final answer
    x = 595,548.59

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Double scale
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1.5x scale

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.