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Finding the Fourth Proportional to 578,112.76, 798,027.42 and 381,850.84

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Solution

The fourth proportional to 578,112.76, 798,027.42 and 381,850.84 is: 527,107.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,112.76 : 798,027.42 = 381,850.84 : x
  2. Step 2: Convert to fraction form
    578,112.76/798,027.42 = 381,850.84/x
  3. Step 3: Cross multiply
    578,112.76x = 798,027.42 × 381,850.84
  4. Step 4: Simplify right side
    578,112.76x = 304,727,440,670.03
  5. Step 5: Solve for x
    x = 304,727,440,670.03/578,112.76
  6. Step 6: Final answer
    x = 527,107.27

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Double scale
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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.