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Finding the Fourth Proportional to 618,089.10, 925,472.54 and 392,226.67

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Solution

The fourth proportional to 618,089.10, 925,472.54 and 392,226.67 is: 587,285.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,089.10 : 925,472.54 = 392,226.67 : x
  2. Step 2: Convert to fraction form
    618,089.10/925,472.54 = 392,226.67/x
  3. Step 3: Cross multiply
    618,089.10x = 925,472.54 × 392,226.67
  4. Step 4: Simplify right side
    618,089.10x = 362,995,012,540.64
  5. Step 5: Solve for x
    x = 362,995,012,540.64/618,089.10
  6. Step 6: Final answer
    x = 587,285.90

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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.