Home / 689,003.55-950,835.96-378,918.39

Finding the Fourth Proportional to 689,003.55, 950,835.96 and 378,918.39

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Solution

The fourth proportional to 689,003.55, 950,835.96 and 378,918.39 is: 522,913.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,003.55 : 950,835.96 = 378,918.39 : x
  2. Step 2: Convert to fraction form
    689,003.55/950,835.96 = 378,918.39/x
  3. Step 3: Cross multiply
    689,003.55x = 950,835.96 × 378,918.39
  4. Step 4: Simplify right side
    689,003.55x = 360,289,229,222.71
  5. Step 5: Solve for x
    x = 360,289,229,222.71/689,003.55
  6. Step 6: Final answer
    x = 522,913.46

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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.