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Finding the Fourth Proportional to 554,976.90, 765,870.03 and 300,328.02

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Solution

The fourth proportional to 554,976.90, 765,870.03 and 300,328.02 is: 414,453.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,976.90 : 765,870.03 = 300,328.02 : x
  2. Step 2: Convert to fraction form
    554,976.90/765,870.03 = 300,328.02/x
  3. Step 3: Cross multiply
    554,976.90x = 765,870.03 × 300,328.02
  4. Step 4: Simplify right side
    554,976.90x = 230,012,229,687.24
  5. Step 5: Solve for x
    x = 230,012,229,687.24/554,976.90
  6. Step 6: Final answer
    x = 414,453.70

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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.