Home / 1,219,039.86-1,828,680.02-420,216.24

Finding the Fourth Proportional to 1,219,039.86, 1,828,680.02 and 420,216.24

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Solution

The fourth proportional to 1,219,039.86, 1,828,680.02 and 420,216.24 is: 630,365.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,039.86 : 1,828,680.02 = 420,216.24 : x
  2. Step 2: Convert to fraction form
    1,219,039.86/1,828,680.02 = 420,216.24/x
  3. Step 3: Cross multiply
    1,219,039.86x = 1,828,680.02 × 420,216.24
  4. Step 4: Simplify right side
    1,219,039.86x = 768,441,042,167.53
  5. Step 5: Solve for x
    x = 768,441,042,167.53/1,219,039.86
  6. Step 6: Final answer
    x = 630,365.80

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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.