Home / 1,219,039.52-1,828,679.58-420,215.90

Finding the Fourth Proportional to 1,219,039.52, 1,828,679.58 and 420,215.90

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Solution

The fourth proportional to 1,219,039.52, 1,828,679.58 and 420,215.90 is: 630,365.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,039.52 : 1,828,679.58 = 420,215.90 : x
  2. Step 2: Convert to fraction form
    1,219,039.52/1,828,679.58 = 420,215.90/x
  3. Step 3: Cross multiply
    1,219,039.52x = 1,828,679.58 × 420,215.90
  4. Step 4: Simplify right side
    1,219,039.52x = 768,440,226,377.92
  5. Step 5: Solve for x
    x = 768,440,226,377.92/1,219,039.52
  6. Step 6: Final answer
    x = 630,365.31

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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.