Home / 678,604.40-1,018,322.60-279,436.40

Finding the Fourth Proportional to 678,604.40, 1,018,322.60 and 279,436.40

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Solution

The fourth proportional to 678,604.40, 1,018,322.60 and 279,436.40 is: 419,325.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,604.40 : 1,018,322.60 = 279,436.40 : x
  2. Step 2: Convert to fraction form
    678,604.40/1,018,322.60 = 279,436.40/x
  3. Step 3: Cross multiply
    678,604.40x = 1,018,322.60 × 279,436.40
  4. Step 4: Simplify right side
    678,604.40x = 284,556,401,382.64
  5. Step 5: Solve for x
    x = 284,556,401,382.64/678,604.40
  6. Step 6: Final answer
    x = 419,325.90

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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.