Home / 1,219,043.53-1,828,685.58-420,219.91

Finding the Fourth Proportional to 1,219,043.53, 1,828,685.58 and 420,219.91

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Solution

The fourth proportional to 1,219,043.53, 1,828,685.58 and 420,219.91 is: 630,371.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,043.53 : 1,828,685.58 = 420,219.91 : x
  2. Step 2: Convert to fraction form
    1,219,043.53/1,828,685.58 = 420,219.91/x
  3. Step 3: Cross multiply
    1,219,043.53x = 1,828,685.58 × 420,219.91
  4. Step 4: Simplify right side
    1,219,043.53x = 768,450,089,845.90
  5. Step 5: Solve for x
    x = 768,450,089,845.90/1,219,043.53
  6. Step 6: Final answer
    x = 630,371.33

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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.