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Finding the Fourth Proportional to 500,028.30, 690,040.87 and 270,585.56

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Solution

The fourth proportional to 500,028.30, 690,040.87 and 270,585.56 is: 373,409.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,028.30 : 690,040.87 = 270,585.56 : x
  2. Step 2: Convert to fraction form
    500,028.30/690,040.87 = 270,585.56/x
  3. Step 3: Cross multiply
    500,028.30x = 690,040.87 × 270,585.56
  4. Step 4: Simplify right side
    500,028.30x = 186,715,095,138.79
  5. Step 5: Solve for x
    x = 186,715,095,138.79/500,028.30
  6. Step 6: Final answer
    x = 373,409.05

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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.