Home / 1,284,589.65-1,927,314.63-420,064.43

Finding the Fourth Proportional to 1,284,589.65, 1,927,314.63 and 420,064.43

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Solution

The fourth proportional to 1,284,589.65, 1,927,314.63 and 420,064.43 is: 630,237.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,589.65 : 1,927,314.63 = 420,064.43 : x
  2. Step 2: Convert to fraction form
    1,284,589.65/1,927,314.63 = 420,064.43/x
  3. Step 3: Cross multiply
    1,284,589.65x = 1,927,314.63 × 420,064.43
  4. Step 4: Simplify right side
    1,284,589.65x = 809,596,321,481.61
  5. Step 5: Solve for x
    x = 809,596,321,481.61/1,284,589.65
  6. Step 6: Final answer
    x = 630,237.31

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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.