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Finding the Fourth Proportional to 325,020.80, 486,656.40 and 325,020.80

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Solution

The fourth proportional to 325,020.80, 486,656.40 and 325,020.80 is: 486,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,020.80 : 486,656.40 = 325,020.80 : x
  2. Step 2: Convert to fraction form
    325,020.80/486,656.40 = 325,020.80/x
  3. Step 3: Cross multiply
    325,020.80x = 486,656.40 × 325,020.80
  4. Step 4: Simplify right side
    325,020.80x = 158,173,452,453.12
  5. Step 5: Solve for x
    x = 158,173,452,453.12/325,020.80
  6. Step 6: Final answer
    x = 486,656.40

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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.