Home / 1,245,353.20-1,868,029.80-820,200.40

Finding the Fourth Proportional to 1,245,353.20, 1,868,029.80 and 820,200.40

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Solution

The fourth proportional to 1,245,353.20, 1,868,029.80 and 820,200.40 is: 1,230,300.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,353.20 : 1,868,029.80 = 820,200.40 : x
  2. Step 2: Convert to fraction form
    1,245,353.20/1,868,029.80 = 820,200.40/x
  3. Step 3: Cross multiply
    1,245,353.20x = 1,868,029.80 × 820,200.40
  4. Step 4: Simplify right side
    1,245,353.20x = 1,532,158,789,171.92
  5. Step 5: Solve for x
    x = 1,532,158,789,171.92/1,245,353.20
  6. Step 6: Final answer
    x = 1,230,300.60

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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.