Home / 689,776.20-951,922.26-387,970.20

Finding the Fourth Proportional to 689,776.20, 951,922.26 and 387,970.20

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Solution

The fourth proportional to 689,776.20, 951,922.26 and 387,970.20 is: 535,416.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,776.20 : 951,922.26 = 387,970.20 : x
  2. Step 2: Convert to fraction form
    689,776.20/951,922.26 = 387,970.20/x
  3. Step 3: Cross multiply
    689,776.20x = 951,922.26 × 387,970.20
  4. Step 4: Simplify right side
    689,776.20x = 369,317,469,596.65
  5. Step 5: Solve for x
    x = 369,317,469,596.65/689,776.20
  6. Step 6: Final answer
    x = 535,416.37

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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.