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Finding the Fourth Proportional to 554,979.98, 765,874.30 and 300,331.10

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Solution

The fourth proportional to 554,979.98, 765,874.30 and 300,331.10 is: 414,457.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,979.98 : 765,874.30 = 300,331.10 : x
  2. Step 2: Convert to fraction form
    554,979.98/765,874.30 = 300,331.10/x
  3. Step 3: Cross multiply
    554,979.98x = 765,874.30 × 300,331.10
  4. Step 4: Simplify right side
    554,979.98x = 230,015,870,980.73
  5. Step 5: Solve for x
    x = 230,015,870,980.73/554,979.98
  6. Step 6: Final answer
    x = 414,457.96

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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.