Home / 1,108,579.20-1,662,868.80-398,630.40

Finding the Fourth Proportional to 1,108,579.20, 1,662,868.80 and 398,630.40

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Solution

The fourth proportional to 1,108,579.20, 1,662,868.80 and 398,630.40 is: 597,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108,579.20 : 1,662,868.80 = 398,630.40 : x
  2. Step 2: Convert to fraction form
    1,108,579.20/1,662,868.80 = 398,630.40/x
  3. Step 3: Cross multiply
    1,108,579.20x = 1,662,868.80 × 398,630.40
  4. Step 4: Simplify right side
    1,108,579.20x = 662,870,054,891.52
  5. Step 5: Solve for x
    x = 662,870,054,891.52/1,108,579.20
  6. Step 6: Final answer
    x = 597,945.60

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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.