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Finding the Fourth Proportional to 604,978.60, 908,028.66 and 305,669.54

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Solution

The fourth proportional to 604,978.60, 908,028.66 and 305,669.54 is: 458,787.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,978.60 : 908,028.66 = 305,669.54 : x
  2. Step 2: Convert to fraction form
    604,978.60/908,028.66 = 305,669.54/x
  3. Step 3: Cross multiply
    604,978.60x = 908,028.66 × 305,669.54
  4. Step 4: Simplify right side
    604,978.60x = 277,556,698,268.87
  5. Step 5: Solve for x
    x = 277,556,698,268.87/604,978.60
  6. Step 6: Final answer
    x = 458,787.63

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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.