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Finding the Fourth Proportional to 772,843.60, 1,159,265.40 and 274,142.80

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Solution

The fourth proportional to 772,843.60, 1,159,265.40 and 274,142.80 is: 411,214.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,843.60 : 1,159,265.40 = 274,142.80 : x
  2. Step 2: Convert to fraction form
    772,843.60/1,159,265.40 = 274,142.80/x
  3. Step 3: Cross multiply
    772,843.60x = 1,159,265.40 × 274,142.80
  4. Step 4: Simplify right side
    772,843.60x = 317,804,262,699.12
  5. Step 5: Solve for x
    x = 317,804,262,699.12/772,843.60
  6. Step 6: Final answer
    x = 411,214.20

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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.