Home / 420,736.41-630,637.11-320,566.37

Finding the Fourth Proportional to 420,736.41, 630,637.11 and 320,566.37

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Solution

The fourth proportional to 420,736.41, 630,637.11 and 320,566.37 is: 480,493.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,736.41 : 630,637.11 = 320,566.37 : x
  2. Step 2: Convert to fraction form
    420,736.41/630,637.11 = 320,566.37/x
  3. Step 3: Cross multiply
    420,736.41x = 630,637.11 × 320,566.37
  4. Step 4: Simplify right side
    420,736.41x = 202,161,045,986.81
  5. Step 5: Solve for x
    x = 202,161,045,986.81/420,736.41
  6. Step 6: Final answer
    x = 480,493.35

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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.