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Finding the Fourth Proportional to 500,999.26, 691,422.72 and 274,688.50

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Solution

The fourth proportional to 500,999.26, 691,422.72 and 274,688.50 is: 379,094.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,999.26 : 691,422.72 = 274,688.50 : x
  2. Step 2: Convert to fraction form
    500,999.26/691,422.72 = 274,688.50/x
  3. Step 3: Cross multiply
    500,999.26x = 691,422.72 × 274,688.50
  4. Step 4: Simplify right side
    500,999.26x = 189,925,869,822.72
  5. Step 5: Solve for x
    x = 189,925,869,822.72/500,999.26
  6. Step 6: Final answer
    x = 379,094.11

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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.