Home / 1,211,758.80-1,817,830.20-413,115.60

Finding the Fourth Proportional to 1,211,758.80, 1,817,830.20 and 413,115.60

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Solution

The fourth proportional to 1,211,758.80, 1,817,830.20 and 413,115.60 is: 619,738.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,758.80 : 1,817,830.20 = 413,115.60 : x
  2. Step 2: Convert to fraction form
    1,211,758.80/1,817,830.20 = 413,115.60/x
  3. Step 3: Cross multiply
    1,211,758.80x = 1,817,830.20 × 413,115.60
  4. Step 4: Simplify right side
    1,211,758.80x = 750,974,013,771.12
  5. Step 5: Solve for x
    x = 750,974,013,771.12/1,211,758.80
  6. Step 6: Final answer
    x = 619,738.86

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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.