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Finding the Fourth Proportional to 500,699.49, 690,964.41 and 271,262.56

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Solution

The fourth proportional to 500,699.49, 690,964.41 and 271,262.56 is: 374,341.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,699.49 : 690,964.41 = 271,262.56 : x
  2. Step 2: Convert to fraction form
    500,699.49/690,964.41 = 271,262.56/x
  3. Step 3: Cross multiply
    500,699.49x = 690,964.41 × 271,262.56
  4. Step 4: Simplify right side
    500,699.49x = 187,432,774,725.49
  5. Step 5: Solve for x
    x = 187,432,774,725.49/500,699.49
  6. Step 6: Final answer
    x = 374,341.85

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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.