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Finding the Fourth Proportional to 703,120.82, 970,326.66 and 397,210.15

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Solution

The fourth proportional to 703,120.82, 970,326.66 and 397,210.15 is: 548,161.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,120.82 : 970,326.66 = 397,210.15 : x
  2. Step 2: Convert to fraction form
    703,120.82/970,326.66 = 397,210.15/x
  3. Step 3: Cross multiply
    703,120.82x = 970,326.66 × 397,210.15
  4. Step 4: Simplify right side
    703,120.82x = 385,423,593,315.97
  5. Step 5: Solve for x
    x = 385,423,593,315.97/703,120.82
  6. Step 6: Final answer
    x = 548,161.26

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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.