Home / 689,190.51-1,033,110.84-385,732.83

Finding the Fourth Proportional to 689,190.51, 1,033,110.84 and 385,732.83

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Solution

The fourth proportional to 689,190.51, 1,033,110.84 and 385,732.83 is: 578,221.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,190.51 : 1,033,110.84 = 385,732.83 : x
  2. Step 2: Convert to fraction form
    689,190.51/1,033,110.84 = 385,732.83/x
  3. Step 3: Cross multiply
    689,190.51x = 1,033,110.84 × 385,732.83
  4. Step 4: Simplify right side
    689,190.51x = 398,504,768,016.88
  5. Step 5: Solve for x
    x = 398,504,768,016.88/689,190.51
  6. Step 6: Final answer
    x = 578,221.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.