Home / 825,876.61-1,239,266.43-320,457.51

Finding the Fourth Proportional to 825,876.61, 1,239,266.43 and 320,457.51

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Solution

The fourth proportional to 825,876.61, 1,239,266.43 and 320,457.51 is: 480,861.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,876.61 : 1,239,266.43 = 320,457.51 : x
  2. Step 2: Convert to fraction form
    825,876.61/1,239,266.43 = 320,457.51/x
  3. Step 3: Cross multiply
    825,876.61x = 1,239,266.43 × 320,457.51
  4. Step 4: Simplify right side
    825,876.61x = 397,132,234,384.39
  5. Step 5: Solve for x
    x = 397,132,234,384.39/825,876.61
  6. Step 6: Final answer
    x = 480,861.46

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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.