Home / 519,936.20-779,904.30-254,215.70

Finding the Fourth Proportional to 519,936.20, 779,904.30 and 254,215.70

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Solution

The fourth proportional to 519,936.20, 779,904.30 and 254,215.70 is: 381,323.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,936.20 : 779,904.30 = 254,215.70 : x
  2. Step 2: Convert to fraction form
    519,936.20/779,904.30 = 254,215.70/x
  3. Step 3: Cross multiply
    519,936.20x = 779,904.30 × 254,215.70
  4. Step 4: Simplify right side
    519,936.20x = 198,263,917,557.51
  5. Step 5: Solve for x
    x = 198,263,917,557.51/519,936.20
  6. Step 6: Final answer
    x = 381,323.55

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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.