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Finding the Fourth Proportional to 500,570.54, 690,789.78 and 274,216.04

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Solution

The fourth proportional to 500,570.54, 690,789.78 and 274,216.04 is: 378,419.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,570.54 : 690,789.78 = 274,216.04 : x
  2. Step 2: Convert to fraction form
    500,570.54/690,789.78 = 274,216.04/x
  3. Step 3: Cross multiply
    500,570.54x = 690,789.78 × 274,216.04
  4. Step 4: Simplify right side
    500,570.54x = 189,425,637,944.07
  5. Step 5: Solve for x
    x = 189,425,637,944.07/500,570.54
  6. Step 6: Final answer
    x = 378,419.47

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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.