Home / 1,261,920.60-1,893,182.22-420,479.64

Finding the Fourth Proportional to 1,261,920.60, 1,893,182.22 and 420,479.64

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Solution

The fourth proportional to 1,261,920.60, 1,893,182.22 and 420,479.64 is: 630,819.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,920.60 : 1,893,182.22 = 420,479.64 : x
  2. Step 2: Convert to fraction form
    1,261,920.60/1,893,182.22 = 420,479.64/x
  3. Step 3: Cross multiply
    1,261,920.60x = 1,893,182.22 × 420,479.64
  4. Step 4: Simplify right side
    1,261,920.60x = 796,044,578,320.00
  5. Step 5: Solve for x
    x = 796,044,578,320.00/1,261,920.60
  6. Step 6: Final answer
    x = 630,819.86

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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.