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Finding the Fourth Proportional to 664,993.51, 997,630.37 and 215,679.37

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Solution

The fourth proportional to 664,993.51, 997,630.37 and 215,679.37 is: 323,564.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,993.51 : 997,630.37 = 215,679.37 : x
  2. Step 2: Convert to fraction form
    664,993.51/997,630.37 = 215,679.37/x
  3. Step 3: Cross multiply
    664,993.51x = 997,630.37 × 215,679.37
  4. Step 4: Simplify right side
    664,993.51x = 215,168,287,739.59
  5. Step 5: Solve for x
    x = 215,168,287,739.59/664,993.51
  6. Step 6: Final answer
    x = 323,564.49

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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.