Home / 1,107,900.20-1,661,850.30-685,807.40

Finding the Fourth Proportional to 1,107,900.20, 1,661,850.30 and 685,807.40

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Solution

The fourth proportional to 1,107,900.20, 1,661,850.30 and 685,807.40 is: 1,028,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,900.20 : 1,661,850.30 = 685,807.40 : x
  2. Step 2: Convert to fraction form
    1,107,900.20/1,661,850.30 = 685,807.40/x
  3. Step 3: Cross multiply
    1,107,900.20x = 1,661,850.30 × 685,807.40
  4. Step 4: Simplify right side
    1,107,900.20x = 1,139,709,233,432.22
  5. Step 5: Solve for x
    x = 1,139,709,233,432.22/1,107,900.20
  6. Step 6: Final answer
    x = 1,028,711.10

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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.