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Finding the Fourth Proportional to 519,470.60, 778,646.22 and 253,410.44

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Solution

The fourth proportional to 519,470.60, 778,646.22 and 253,410.44 is: 379,842.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,470.60 : 778,646.22 = 253,410.44 : x
  2. Step 2: Convert to fraction form
    519,470.60/778,646.22 = 253,410.44/x
  3. Step 3: Cross multiply
    519,470.60x = 778,646.22 × 253,410.44
  4. Step 4: Simplify right side
    519,470.60x = 197,317,081,214.54
  5. Step 5: Solve for x
    x = 197,317,081,214.54/519,470.60
  6. Step 6: Final answer
    x = 379,842.63

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Double scale
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Similar ratio
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1.5x scale

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.