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Finding the Fourth Proportional to 500,755.98, 690,666.30 and 347,794.37

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Solution

The fourth proportional to 500,755.98, 690,666.30 and 347,794.37 is: 479,694.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,755.98 : 690,666.30 = 347,794.37 : x
  2. Step 2: Convert to fraction form
    500,755.98/690,666.30 = 347,794.37/x
  3. Step 3: Cross multiply
    500,755.98x = 690,666.30 × 347,794.37
  4. Step 4: Simplify right side
    500,755.98x = 240,209,850,688.73
  5. Step 5: Solve for x
    x = 240,209,850,688.73/500,755.98
  6. Step 6: Final answer
    x = 479,694.42

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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.