Home / 852,426.72-1,278,640.80-221,287.68

Finding the Fourth Proportional to 852,426.72, 1,278,640.80 and 221,287.68

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Solution

The fourth proportional to 852,426.72, 1,278,640.80 and 221,287.68 is: 331,931.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,426.72 : 1,278,640.80 = 221,287.68 : x
  2. Step 2: Convert to fraction form
    852,426.72/1,278,640.80 = 221,287.68/x
  3. Step 3: Cross multiply
    852,426.72x = 1,278,640.80 × 221,287.68
  4. Step 4: Simplify right side
    852,426.72x = 282,947,456,185.34
  5. Step 5: Solve for x
    x = 282,947,456,185.34/852,426.72
  6. Step 6: Final answer
    x = 331,931.71

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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.