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Finding the Fourth Proportional to 500,353.16, 690,486.44 and 270,910.40

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Solution

The fourth proportional to 500,353.16, 690,486.44 and 270,910.40 is: 373,855.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,353.16 : 690,486.44 = 270,910.40 : x
  2. Step 2: Convert to fraction form
    500,353.16/690,486.44 = 270,910.40/x
  3. Step 3: Cross multiply
    500,353.16x = 690,486.44 × 270,910.40
  4. Step 4: Simplify right side
    500,353.16x = 187,059,957,654.98
  5. Step 5: Solve for x
    x = 187,059,957,654.98/500,353.16
  6. Step 6: Final answer
    x = 373,855.85

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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.