Home / 678,815.37-1,018,209.74-273,996.81

Finding the Fourth Proportional to 678,815.37, 1,018,209.74 and 273,996.81

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Solution

The fourth proportional to 678,815.37, 1,018,209.74 and 273,996.81 is: 410,989.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,815.37 : 1,018,209.74 = 273,996.81 : x
  2. Step 2: Convert to fraction form
    678,815.37/1,018,209.74 = 273,996.81/x
  3. Step 3: Cross multiply
    678,815.37x = 1,018,209.74 × 273,996.81
  4. Step 4: Simplify right side
    678,815.37x = 278,986,220,842.18
  5. Step 5: Solve for x
    x = 278,986,220,842.18/678,815.37
  6. Step 6: Final answer
    x = 410,989.84

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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.