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Finding the Fourth Proportional to 703,608.20, 970,448.02 and 442,039.56

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Solution

The fourth proportional to 703,608.20, 970,448.02 and 442,039.56 is: 609,680.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,608.20 : 970,448.02 = 442,039.56 : x
  2. Step 2: Convert to fraction form
    703,608.20/970,448.02 = 442,039.56/x
  3. Step 3: Cross multiply
    703,608.20x = 970,448.02 × 442,039.56
  4. Step 4: Simplify right side
    703,608.20x = 428,976,415,763.67
  5. Step 5: Solve for x
    x = 428,976,415,763.67/703,608.20
  6. Step 6: Final answer
    x = 609,680.81

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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.