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Finding the Fourth Proportional to 571,187.55, 855,419.40 and 330,793.53

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Solution

The fourth proportional to 571,187.55, 855,419.40 and 330,793.53 is: 495,401.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,187.55 : 855,419.40 = 330,793.53 : x
  2. Step 2: Convert to fraction form
    571,187.55/855,419.40 = 330,793.53/x
  3. Step 3: Cross multiply
    571,187.55x = 855,419.40 × 330,793.53
  4. Step 4: Simplify right side
    571,187.55x = 282,967,202,956.48
  5. Step 5: Solve for x
    x = 282,967,202,956.48/571,187.55
  6. Step 6: Final answer
    x = 495,401.56

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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.