Home / 685,583.16-1,028,422.74-212,206.20

Finding the Fourth Proportional to 685,583.16, 1,028,422.74 and 212,206.20

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Solution

The fourth proportional to 685,583.16, 1,028,422.74 and 212,206.20 is: 318,324.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,583.16 : 1,028,422.74 = 212,206.20 : x
  2. Step 2: Convert to fraction form
    685,583.16/1,028,422.74 = 212,206.20/x
  3. Step 3: Cross multiply
    685,583.16x = 1,028,422.74 × 212,206.20
  4. Step 4: Simplify right side
    685,583.16x = 218,237,681,648.99
  5. Step 5: Solve for x
    x = 218,237,681,648.99/685,583.16
  6. Step 6: Final answer
    x = 318,324.16

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1.5x scale

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.