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Finding the Fourth Proportional to 768,992.40, 1,153,690.20 and 295,693.20

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Solution

The fourth proportional to 768,992.40, 1,153,690.20 and 295,693.20 is: 443,617.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,992.40 : 1,153,690.20 = 295,693.20 : x
  2. Step 2: Convert to fraction form
    768,992.40/1,153,690.20 = 295,693.20/x
  3. Step 3: Cross multiply
    768,992.40x = 1,153,690.20 × 295,693.20
  4. Step 4: Simplify right side
    768,992.40x = 341,138,347,046.64
  5. Step 5: Solve for x
    x = 341,138,347,046.64/768,992.40
  6. Step 6: Final answer
    x = 443,617.32

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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.