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Finding the Fourth Proportional to 500,091.37, 690,120.81 and 270,643.68

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Solution

The fourth proportional to 500,091.37, 690,120.81 and 270,643.68 is: 373,485.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,091.37 : 690,120.81 = 270,643.68 : x
  2. Step 2: Convert to fraction form
    500,091.37/690,120.81 = 270,643.68/x
  3. Step 3: Cross multiply
    500,091.37x = 690,120.81 × 270,643.68
  4. Step 4: Simplify right side
    500,091.37x = 186,776,835,662.98
  5. Step 5: Solve for x
    x = 186,776,835,662.98/500,091.37
  6. Step 6: Final answer
    x = 373,485.42

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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.