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Finding the Fourth Proportional to 550,665.89, 759,964.74 and 305,673.71

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Solution

The fourth proportional to 550,665.89, 759,964.74 and 305,673.71 is: 421,855.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,665.89 : 759,964.74 = 305,673.71 : x
  2. Step 2: Convert to fraction form
    550,665.89/759,964.74 = 305,673.71/x
  3. Step 3: Cross multiply
    550,665.89x = 759,964.74 × 305,673.71
  4. Step 4: Simplify right side
    550,665.89x = 232,301,240,016.62
  5. Step 5: Solve for x
    x = 232,301,240,016.62/550,665.89
  6. Step 6: Final answer
    x = 421,855.15

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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.