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Finding the Fourth Proportional to 500,848.44, 691,176.78 and 274,489.08

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Solution

The fourth proportional to 500,848.44, 691,176.78 and 274,489.08 is: 378,798.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,848.44 : 691,176.78 = 274,489.08 : x
  2. Step 2: Convert to fraction form
    500,848.44/691,176.78 = 274,489.08/x
  3. Step 3: Cross multiply
    500,848.44x = 691,176.78 × 274,489.08
  4. Step 4: Simplify right side
    500,848.44x = 189,720,478,459.56
  5. Step 5: Solve for x
    x = 189,720,478,459.56/500,848.44
  6. Step 6: Final answer
    x = 378,798.18

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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.