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Finding the Fourth Proportional to 685,381.60, 1,027,611.60 and 365,586.40

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Solution

The fourth proportional to 685,381.60, 1,027,611.60 and 365,586.40 is: 548,133.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,381.60 : 1,027,611.60 = 365,586.40 : x
  2. Step 2: Convert to fraction form
    685,381.60/1,027,611.60 = 365,586.40/x
  3. Step 3: Cross multiply
    685,381.60x = 1,027,611.60 × 365,586.40
  4. Step 4: Simplify right side
    685,381.60x = 375,680,825,442.24
  5. Step 5: Solve for x
    x = 375,680,825,442.24/685,381.60
  6. Step 6: Final answer
    x = 548,133.81

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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.