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Finding the Fourth Proportional to 554,981.86, 765,880.37 and 300,338.34

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Solution

The fourth proportional to 554,981.86, 765,880.37 and 300,338.34 is: 414,469.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,981.86 : 765,880.37 = 300,338.34 : x
  2. Step 2: Convert to fraction form
    554,981.86/765,880.37 = 300,338.34/x
  3. Step 3: Cross multiply
    554,981.86x = 765,880.37 × 300,338.34
  4. Step 4: Simplify right side
    554,981.86x = 230,023,238,964.39
  5. Step 5: Solve for x
    x = 230,023,238,964.39/554,981.86
  6. Step 6: Final answer
    x = 414,469.83

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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.