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Finding the Fourth Proportional to 664,999.70, 997,499.55 and 455,047.70

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Solution

The fourth proportional to 664,999.70, 997,499.55 and 455,047.70 is: 682,571.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,999.70 : 997,499.55 = 455,047.70 : x
  2. Step 2: Convert to fraction form
    664,999.70/997,499.55 = 455,047.70/x
  3. Step 3: Cross multiply
    664,999.70x = 997,499.55 × 455,047.70
  4. Step 4: Simplify right side
    664,999.70x = 453,909,875,978.54
  5. Step 5: Solve for x
    x = 453,909,875,978.54/664,999.70
  6. Step 6: Final answer
    x = 682,571.55

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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.