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Finding the Fourth Proportional to 665,273.70, 997,910.55 and 310,323.60

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Solution

The fourth proportional to 665,273.70, 997,910.55 and 310,323.60 is: 465,485.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,273.70 : 997,910.55 = 310,323.60 : x
  2. Step 2: Convert to fraction form
    665,273.70/997,910.55 = 310,323.60/x
  3. Step 3: Cross multiply
    665,273.70x = 997,910.55 × 310,323.60
  4. Step 4: Simplify right side
    665,273.70x = 309,675,194,353.98
  5. Step 5: Solve for x
    x = 309,675,194,353.98/665,273.70
  6. Step 6: Final answer
    x = 465,485.40

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Similar ratio
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1.5x scale

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.