Home / 643,914.75-965,907.66-194,624.31

Finding the Fourth Proportional to 643,914.75, 965,907.66 and 194,624.31

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Solution

The fourth proportional to 643,914.75, 965,907.66 and 194,624.31 is: 291,947.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,914.75 : 965,907.66 = 194,624.31 : x
  2. Step 2: Convert to fraction form
    643,914.75/965,907.66 = 194,624.31/x
  3. Step 3: Cross multiply
    643,914.75x = 965,907.66 × 194,624.31
  4. Step 4: Simplify right side
    643,914.75x = 187,989,111,851.22
  5. Step 5: Solve for x
    x = 187,989,111,851.22/643,914.75
  6. Step 6: Final answer
    x = 291,947.21

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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.