Home / 1,257,815.20-1,886,722.80-1,208,048.80

Finding the Fourth Proportional to 1,257,815.20, 1,886,722.80 and 1,208,048.80

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Solution

The fourth proportional to 1,257,815.20, 1,886,722.80 and 1,208,048.80 is: 1,812,073.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257,815.20 : 1,886,722.80 = 1,208,048.80 : x
  2. Step 2: Convert to fraction form
    1,257,815.20/1,886,722.80 = 1,208,048.80/x
  3. Step 3: Cross multiply
    1,257,815.20x = 1,886,722.80 × 1,208,048.80
  4. Step 4: Simplify right side
    1,257,815.20x = 2,279,253,214,472.64
  5. Step 5: Solve for x
    x = 2,279,253,214,472.64/1,257,815.20
  6. Step 6: Final answer
    x = 1,812,073.20

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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.