Home / 621,085.70-931,825.38-221,717.63

Finding the Fourth Proportional to 621,085.70, 931,825.38 and 221,717.63

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Solution

The fourth proportional to 621,085.70, 931,825.38 and 221,717.63 is: 332,646.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,085.70 : 931,825.38 = 221,717.63 : x
  2. Step 2: Convert to fraction form
    621,085.70/931,825.38 = 221,717.63/x
  3. Step 3: Cross multiply
    621,085.70x = 931,825.38 × 221,717.63
  4. Step 4: Simplify right side
    621,085.70x = 206,602,110,168.32
  5. Step 5: Solve for x
    x = 206,602,110,168.32/621,085.70
  6. Step 6: Final answer
    x = 332,646.71

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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.