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Finding the Fourth Proportional to 455,930.70, 685,062.45 and 404,609.10

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Solution

The fourth proportional to 455,930.70, 685,062.45 and 404,609.10 is: 607,948.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,930.70 : 685,062.45 = 404,609.10 : x
  2. Step 2: Convert to fraction form
    455,930.70/685,062.45 = 404,609.10/x
  3. Step 3: Cross multiply
    455,930.70x = 685,062.45 × 404,609.10
  4. Step 4: Simplify right side
    455,930.70x = 277,182,501,338.30
  5. Step 5: Solve for x
    x = 277,182,501,338.30/455,930.70
  6. Step 6: Final answer
    x = 607,948.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.