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Finding the Fourth Proportional to 488,928.64, 673,459.44 and 345,439.60

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Solution

The fourth proportional to 488,928.64, 673,459.44 and 345,439.60 is: 475,814.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,928.64 : 673,459.44 = 345,439.60 : x
  2. Step 2: Convert to fraction form
    488,928.64/673,459.44 = 345,439.60/x
  3. Step 3: Cross multiply
    488,928.64x = 673,459.44 × 345,439.60
  4. Step 4: Simplify right side
    488,928.64x = 232,639,559,569.82
  5. Step 5: Solve for x
    x = 232,639,559,569.82/488,928.64
  6. Step 6: Final answer
    x = 475,814.96

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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.