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Finding the Fourth Proportional to 554,970.34, 765,859.06 and 300,321.52

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Solution

The fourth proportional to 554,970.34, 765,859.06 and 300,321.52 is: 414,443.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,970.34 : 765,859.06 = 300,321.52 : x
  2. Step 2: Convert to fraction form
    554,970.34/765,859.06 = 300,321.52/x
  3. Step 3: Cross multiply
    554,970.34x = 765,859.06 × 300,321.52
  4. Step 4: Simplify right side
    554,970.34x = 230,003,957,004.97
  5. Step 5: Solve for x
    x = 230,003,957,004.97/554,970.34
  6. Step 6: Final answer
    x = 414,443.69

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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.