Home / 921,665.38-1,382,731.35-256,817.38

Finding the Fourth Proportional to 921,665.38, 1,382,731.35 and 256,817.38

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Solution

The fourth proportional to 921,665.38, 1,382,731.35 and 256,817.38 is: 385,291.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,665.38 : 1,382,731.35 = 256,817.38 : x
  2. Step 2: Convert to fraction form
    921,665.38/1,382,731.35 = 256,817.38/x
  3. Step 3: Cross multiply
    921,665.38x = 1,382,731.35 × 256,817.38
  4. Step 4: Simplify right side
    921,665.38x = 355,109,434,353.12
  5. Step 5: Solve for x
    x = 355,109,434,353.12/921,665.38
  6. Step 6: Final answer
    x = 385,291.07

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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.