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Finding the Fourth Proportional to 689,735.24, 951,834.42 and 387,929

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Solution

The fourth proportional to 689,735.24, 951,834.42 and 387,929 is: 535,341.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,735.24 : 951,834.42 = 387,929 : x
  2. Step 2: Convert to fraction form
    689,735.24/951,834.42 = 387,929/x
  3. Step 3: Cross multiply
    689,735.24x = 951,834.42 × 387,929
  4. Step 4: Simplify right side
    689,735.24x = 369,244,174,716.18
  5. Step 5: Solve for x
    x = 369,244,174,716.18/689,735.24
  6. Step 6: Final answer
    x = 535,341.90

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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.