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Finding the Fourth Proportional to 700,879, 967,213.40 and 378,589.09

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Solution

The fourth proportional to 700,879, 967,213.40 and 378,589.09 is: 522,453.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,879 : 967,213.40 = 378,589.09 : x
  2. Step 2: Convert to fraction form
    700,879/967,213.40 = 378,589.09/x
  3. Step 3: Cross multiply
    700,879x = 967,213.40 × 378,589.09
  4. Step 4: Simplify right side
    700,879x = 366,176,440,941.81
  5. Step 5: Solve for x
    x = 366,176,440,941.81/700,879
  6. Step 6: Final answer
    x = 522,453.15

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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.