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Finding the Fourth Proportional to 554,978.48, 765,872.23 and 300,329.60

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Solution

The fourth proportional to 554,978.48, 765,872.23 and 300,329.60 is: 414,455.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,978.48 : 765,872.23 = 300,329.60 : x
  2. Step 2: Convert to fraction form
    554,978.48/765,872.23 = 300,329.60/x
  3. Step 3: Cross multiply
    554,978.48x = 765,872.23 × 300,329.60
  4. Step 4: Simplify right side
    554,978.48x = 230,014,100,487.01
  5. Step 5: Solve for x
    x = 230,014,100,487.01/554,978.48
  6. Step 6: Final answer
    x = 414,455.89

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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.