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Finding the Fourth Proportional to 439,792.40, 659,688.60 and 262,499.60

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Solution

The fourth proportional to 439,792.40, 659,688.60 and 262,499.60 is: 393,749.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,792.40 : 659,688.60 = 262,499.60 : x
  2. Step 2: Convert to fraction form
    439,792.40/659,688.60 = 262,499.60/x
  3. Step 3: Cross multiply
    439,792.40x = 659,688.60 × 262,499.60
  4. Step 4: Simplify right side
    439,792.40x = 173,167,993,624.56
  5. Step 5: Solve for x
    x = 173,167,993,624.56/439,792.40
  6. Step 6: Final answer
    x = 393,749.40

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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.