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Finding the Fourth Proportional to 519,754.80, 779,632.20 and 378,037.20

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Solution

The fourth proportional to 519,754.80, 779,632.20 and 378,037.20 is: 567,055.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,754.80 : 779,632.20 = 378,037.20 : x
  2. Step 2: Convert to fraction form
    519,754.80/779,632.20 = 378,037.20/x
  3. Step 3: Cross multiply
    519,754.80x = 779,632.20 × 378,037.20
  4. Step 4: Simplify right side
    519,754.80x = 294,729,973,917.84
  5. Step 5: Solve for x
    x = 294,729,973,917.84/519,754.80
  6. Step 6: Final answer
    x = 567,055.80

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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.