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Finding the Fourth Proportional to 703,220.68, 970,449.22 and 380,930.78

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Solution

The fourth proportional to 703,220.68, 970,449.22 and 380,930.78 is: 525,687.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,220.68 : 970,449.22 = 380,930.78 : x
  2. Step 2: Convert to fraction form
    703,220.68/970,449.22 = 380,930.78/x
  3. Step 3: Cross multiply
    703,220.68x = 970,449.22 × 380,930.78
  4. Step 4: Simplify right side
    703,220.68x = 369,673,978,324.99
  5. Step 5: Solve for x
    x = 369,673,978,324.99/703,220.68
  6. Step 6: Final answer
    x = 525,687.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.