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Finding the Fourth Proportional to 500,548.70, 690,591.83 and 306,884.70

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Solution

The fourth proportional to 500,548.70, 690,591.83 and 306,884.70 is: 423,399.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,548.70 : 690,591.83 = 306,884.70 : x
  2. Step 2: Convert to fraction form
    500,548.70/690,591.83 = 306,884.70/x
  3. Step 3: Cross multiply
    500,548.70x = 690,591.83 × 306,884.70
  4. Step 4: Simplify right side
    500,548.70x = 211,932,066,572.00
  5. Step 5: Solve for x
    x = 211,932,066,572.00/500,548.70
  6. Step 6: Final answer
    x = 423,399.49

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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.