Home / 664,421.81-996,778.05-215,188.07

Finding the Fourth Proportional to 664,421.81, 996,778.05 and 215,188.07

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Solution

The fourth proportional to 664,421.81, 996,778.05 and 215,188.07 is: 322,829.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,421.81 : 996,778.05 = 215,188.07 : x
  2. Step 2: Convert to fraction form
    664,421.81/996,778.05 = 215,188.07/x
  3. Step 3: Cross multiply
    664,421.81x = 996,778.05 × 215,188.07
  4. Step 4: Simplify right side
    664,421.81x = 214,494,744,797.86
  5. Step 5: Solve for x
    x = 214,494,744,797.86/664,421.81
  6. Step 6: Final answer
    x = 322,829.18

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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.