Home / 665,943.12-998,930.88-216,665.28

Finding the Fourth Proportional to 665,943.12, 998,930.88 and 216,665.28

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Solution

The fourth proportional to 665,943.12, 998,930.88 and 216,665.28 is: 325,003.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,943.12 : 998,930.88 = 216,665.28 : x
  2. Step 2: Convert to fraction form
    665,943.12/998,930.88 = 216,665.28/x
  3. Step 3: Cross multiply
    665,943.12x = 998,930.88 × 216,665.28
  4. Step 4: Simplify right side
    665,943.12x = 216,433,638,815.85
  5. Step 5: Solve for x
    x = 216,433,638,815.85/665,943.12
  6. Step 6: Final answer
    x = 325,003.19

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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.