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Finding the Fourth Proportional to 491,181.06, 677,922.72 and 307,505.07

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Solution

The fourth proportional to 491,181.06, 677,922.72 and 307,505.07 is: 424,415.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,181.06 : 677,922.72 = 307,505.07 : x
  2. Step 2: Convert to fraction form
    491,181.06/677,922.72 = 307,505.07/x
  3. Step 3: Cross multiply
    491,181.06x = 677,922.72 × 307,505.07
  4. Step 4: Simplify right side
    491,181.06x = 208,464,673,468.19
  5. Step 5: Solve for x
    x = 208,464,673,468.19/491,181.06
  6. Step 6: Final answer
    x = 424,415.13

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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.