Home / 674,992.80-1,012,489.20-638,251.20

Finding the Fourth Proportional to 674,992.80, 1,012,489.20 and 638,251.20

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Solution

The fourth proportional to 674,992.80, 1,012,489.20 and 638,251.20 is: 957,376.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,992.80 : 1,012,489.20 = 638,251.20 : x
  2. Step 2: Convert to fraction form
    674,992.80/1,012,489.20 = 638,251.20/x
  3. Step 3: Cross multiply
    674,992.80x = 1,012,489.20 × 638,251.20
  4. Step 4: Simplify right side
    674,992.80x = 646,222,446,887.04
  5. Step 5: Solve for x
    x = 646,222,446,887.04/674,992.80
  6. Step 6: Final answer
    x = 957,376.80

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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.