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Finding the Fourth Proportional to 519,212.70, 778,819.05 and 283,016.70

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Solution

The fourth proportional to 519,212.70, 778,819.05 and 283,016.70 is: 424,525.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,212.70 : 778,819.05 = 283,016.70 : x
  2. Step 2: Convert to fraction form
    519,212.70/778,819.05 = 283,016.70/x
  3. Step 3: Cross multiply
    519,212.70x = 778,819.05 × 283,016.70
  4. Step 4: Simplify right side
    519,212.70x = 220,418,797,428.14
  5. Step 5: Solve for x
    x = 220,418,797,428.14/519,212.70
  6. Step 6: Final answer
    x = 424,525.05

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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.