Home / 540,945.20-811,181.08-256,717.21

Finding the Fourth Proportional to 540,945.20, 811,181.08 and 256,717.21

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Solution

The fourth proportional to 540,945.20, 811,181.08 and 256,717.21 is: 384,963.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,945.20 : 811,181.08 = 256,717.21 : x
  2. Step 2: Convert to fraction form
    540,945.20/811,181.08 = 256,717.21/x
  3. Step 3: Cross multiply
    540,945.20x = 811,181.08 × 256,717.21
  4. Step 4: Simplify right side
    540,945.20x = 208,244,143,662.39
  5. Step 5: Solve for x
    x = 208,244,143,662.39/540,945.20
  6. Step 6: Final answer
    x = 384,963.47

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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.