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Finding the Fourth Proportional to 805,165.40, 1,207,893.90 and 404,798.60

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Solution

The fourth proportional to 805,165.40, 1,207,893.90 and 404,798.60 is: 607,271.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,165.40 : 1,207,893.90 = 404,798.60 : x
  2. Step 2: Convert to fraction form
    805,165.40/1,207,893.90 = 404,798.60/x
  3. Step 3: Cross multiply
    805,165.40x = 1,207,893.90 × 404,798.60
  4. Step 4: Simplify right side
    805,165.40x = 488,953,759,668.54
  5. Step 5: Solve for x
    x = 488,953,759,668.54/805,165.40
  6. Step 6: Final answer
    x = 607,271.20

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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.