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Finding the Fourth Proportional to 405,423.60, 607,260.60 and 335,439.60

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Solution

The fourth proportional to 405,423.60, 607,260.60 and 335,439.60 is: 502,435.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,423.60 : 607,260.60 = 335,439.60 : x
  2. Step 2: Convert to fraction form
    405,423.60/607,260.60 = 335,439.60/x
  3. Step 3: Cross multiply
    405,423.60x = 607,260.60 × 335,439.60
  4. Step 4: Simplify right side
    405,423.60x = 203,699,252,759.76
  5. Step 5: Solve for x
    x = 203,699,252,759.76/405,423.60
  6. Step 6: Final answer
    x = 502,435.61

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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.