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Finding the Fourth Proportional to 554,965.56, 765,854.46 and 300,316.68

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Solution

The fourth proportional to 554,965.56, 765,854.46 and 300,316.68 is: 414,438.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,965.56 : 765,854.46 = 300,316.68 : x
  2. Step 2: Convert to fraction form
    554,965.56/765,854.46 = 300,316.68/x
  3. Step 3: Cross multiply
    554,965.56x = 765,854.46 × 300,316.68
  4. Step 4: Simplify right side
    554,965.56x = 229,998,868,790.39
  5. Step 5: Solve for x
    x = 229,998,868,790.39/554,965.56
  6. Step 6: Final answer
    x = 414,438.09

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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.