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Finding the Fourth Proportional to 665,052.60, 997,578.90 and 487,905.60

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Solution

The fourth proportional to 665,052.60, 997,578.90 and 487,905.60 is: 731,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,052.60 : 997,578.90 = 487,905.60 : x
  2. Step 2: Convert to fraction form
    665,052.60/997,578.90 = 487,905.60/x
  3. Step 3: Cross multiply
    665,052.60x = 997,578.90 × 487,905.60
  4. Step 4: Simplify right side
    665,052.60x = 486,724,331,751.84
  5. Step 5: Solve for x
    x = 486,724,331,751.84/665,052.60
  6. Step 6: Final answer
    x = 731,858.40

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Similar ratio
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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.