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Finding the Fourth Proportional to 619,271.72, 854,584.69 and 361,298.67

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Solution

The fourth proportional to 619,271.72, 854,584.69 and 361,298.67 is: 498,586.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,271.72 : 854,584.69 = 361,298.67 : x
  2. Step 2: Convert to fraction form
    619,271.72/854,584.69 = 361,298.67/x
  3. Step 3: Cross multiply
    619,271.72x = 854,584.69 × 361,298.67
  4. Step 4: Simplify right side
    619,271.72x = 308,760,311,899.36
  5. Step 5: Solve for x
    x = 308,760,311,899.36/619,271.72
  6. Step 6: Final answer
    x = 498,586.16

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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.