Home / 802,986.78-1,108,121.67-445,290.78

Finding the Fourth Proportional to 802,986.78, 1,108,121.67 and 445,290.78

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Solution

The fourth proportional to 802,986.78, 1,108,121.67 and 445,290.78 is: 614,501.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,986.78 : 1,108,121.67 = 445,290.78 : x
  2. Step 2: Convert to fraction form
    802,986.78/1,108,121.67 = 445,290.78/x
  3. Step 3: Cross multiply
    802,986.78x = 1,108,121.67 × 445,290.78
  4. Step 4: Simplify right side
    802,986.78x = 493,436,362,769.20
  5. Step 5: Solve for x
    x = 493,436,362,769.20/802,986.78
  6. Step 6: Final answer
    x = 614,501.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.