Home / 1,189,121.58-1,783,618.65-420,566.04

Finding the Fourth Proportional to 1,189,121.58, 1,783,618.65 and 420,566.04

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Solution

The fourth proportional to 1,189,121.58, 1,783,618.65 and 420,566.04 is: 630,826.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,121.58 : 1,783,618.65 = 420,566.04 : x
  2. Step 2: Convert to fraction form
    1,189,121.58/1,783,618.65 = 420,566.04/x
  3. Step 3: Cross multiply
    1,189,121.58x = 1,783,618.65 × 420,566.04
  4. Step 4: Simplify right side
    1,189,121.58x = 750,129,432,500.65
  5. Step 5: Solve for x
    x = 750,129,432,500.65/1,189,121.58
  6. Step 6: Final answer
    x = 630,826.52

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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.