Home / 724,808.20-1,086,693.90-325,121.80

Finding the Fourth Proportional to 724,808.20, 1,086,693.90 and 325,121.80

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Solution

The fourth proportional to 724,808.20, 1,086,693.90 and 325,121.80 is: 487,450.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,808.20 : 1,086,693.90 = 325,121.80 : x
  2. Step 2: Convert to fraction form
    724,808.20/1,086,693.90 = 325,121.80/x
  3. Step 3: Cross multiply
    724,808.20x = 1,086,693.90 × 325,121.80
  4. Step 4: Simplify right side
    724,808.20x = 353,307,876,817.02
  5. Step 5: Solve for x
    x = 353,307,876,817.02/724,808.20
  6. Step 6: Final answer
    x = 487,450.17

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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.