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Finding the Fourth Proportional to 478,558.84, 660,440.61 and 263,698.84

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Solution

The fourth proportional to 478,558.84, 660,440.61 and 263,698.84 is: 363,920.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,558.84 : 660,440.61 = 263,698.84 : x
  2. Step 2: Convert to fraction form
    478,558.84/660,440.61 = 263,698.84/x
  3. Step 3: Cross multiply
    478,558.84x = 660,440.61 × 263,698.84
  4. Step 4: Simplify right side
    478,558.84x = 174,157,422,745.89
  5. Step 5: Solve for x
    x = 174,157,422,745.89/478,558.84
  6. Step 6: Final answer
    x = 363,920.61

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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.