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Finding the Fourth Proportional to 703,580.92, 970,990.20 and 428,046.26

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Solution

The fourth proportional to 703,580.92, 970,990.20 and 428,046.26 is: 590,733.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,580.92 : 970,990.20 = 428,046.26 : x
  2. Step 2: Convert to fraction form
    703,580.92/970,990.20 = 428,046.26/x
  3. Step 3: Cross multiply
    703,580.92x = 970,990.20 × 428,046.26
  4. Step 4: Simplify right side
    703,580.92x = 415,628,723,606.65
  5. Step 5: Solve for x
    x = 415,628,723,606.65/703,580.92
  6. Step 6: Final answer
    x = 590,733.36

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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.