Home / 543,619.40-815,558.70-262,905.80

Finding the Fourth Proportional to 543,619.40, 815,558.70 and 262,905.80

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Solution

The fourth proportional to 543,619.40, 815,558.70 and 262,905.80 is: 394,421.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,619.40 : 815,558.70 = 262,905.80 : x
  2. Step 2: Convert to fraction form
    543,619.40/815,558.70 = 262,905.80/x
  3. Step 3: Cross multiply
    543,619.40x = 815,558.70 × 262,905.80
  4. Step 4: Simplify right side
    543,619.40x = 214,415,112,470.46
  5. Step 5: Solve for x
    x = 214,415,112,470.46/543,619.40
  6. Step 6: Final answer
    x = 394,421.38

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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.