Home / 689,010.90-950,785.65-378,935.33

Finding the Fourth Proportional to 689,010.90, 950,785.65 and 378,935.33

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Solution

The fourth proportional to 689,010.90, 950,785.65 and 378,935.33 is: 522,903.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,010.90 : 950,785.65 = 378,935.33 : x
  2. Step 2: Convert to fraction form
    689,010.90/950,785.65 = 378,935.33/x
  3. Step 3: Cross multiply
    689,010.90x = 950,785.65 × 378,935.33
  4. Step 4: Simplify right side
    689,010.90x = 360,286,269,288.09
  5. Step 5: Solve for x
    x = 360,286,269,288.09/689,010.90
  6. Step 6: Final answer
    x = 522,903.58

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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.