Home / 505,890.77-698,131.08-276,448.05

Finding the Fourth Proportional to 505,890.77, 698,131.08 and 276,448.05

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Solution

The fourth proportional to 505,890.77, 698,131.08 and 276,448.05 is: 381,499.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,890.77 : 698,131.08 = 276,448.05 : x
  2. Step 2: Convert to fraction form
    505,890.77/698,131.08 = 276,448.05/x
  3. Step 3: Cross multiply
    505,890.77x = 698,131.08 × 276,448.05
  4. Step 4: Simplify right side
    505,890.77x = 192,996,975,710.39
  5. Step 5: Solve for x
    x = 192,996,975,710.39/505,890.77
  6. Step 6: Final answer
    x = 381,499.31

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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.