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Finding the Fourth Proportional to 980,465.86, 1,470,783.51 and 270,493.90

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Solution

The fourth proportional to 980,465.86, 1,470,783.51 and 270,493.90 is: 405,764.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,465.86 : 1,470,783.51 = 270,493.90 : x
  2. Step 2: Convert to fraction form
    980,465.86/1,470,783.51 = 270,493.90/x
  3. Step 3: Cross multiply
    980,465.86x = 1,470,783.51 × 270,493.90
  4. Step 4: Simplify right side
    980,465.86x = 397,837,964,759.39
  5. Step 5: Solve for x
    x = 397,837,964,759.39/980,465.86
  6. Step 6: Final answer
    x = 405,764.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.