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Finding the Fourth Proportional to 479,766.25, 662,135.75 and 278,562.25

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Solution

The fourth proportional to 479,766.25, 662,135.75 and 278,562.25 is: 384,449.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,766.25 : 662,135.75 = 278,562.25 : x
  2. Step 2: Convert to fraction form
    479,766.25/662,135.75 = 278,562.25/x
  3. Step 3: Cross multiply
    479,766.25x = 662,135.75 × 278,562.25
  4. Step 4: Simplify right side
    479,766.25x = 184,446,022,932.63
  5. Step 5: Solve for x
    x = 184,446,022,932.63/479,766.25
  6. Step 6: Final answer
    x = 384,449.77

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1.5x scale

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.