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Finding the Fourth Proportional to 1,230,961.14, 1,699,009.79 and 721,827.54

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Solution

The fourth proportional to 1,230,961.14, 1,699,009.79 and 721,827.54 is: 996,288.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,961.14 : 1,699,009.79 = 721,827.54 : x
  2. Step 2: Convert to fraction form
    1,230,961.14/1,699,009.79 = 721,827.54/x
  3. Step 3: Cross multiply
    1,230,961.14x = 1,699,009.79 × 721,827.54
  4. Step 4: Simplify right side
    1,230,961.14x = 1,226,392,048,656.57
  5. Step 5: Solve for x
    x = 1,226,392,048,656.57/1,230,961.14
  6. Step 6: Final answer
    x = 996,288.20

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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.