Home / 811,644.48-1,217,632.74-279,096.30

Finding the Fourth Proportional to 811,644.48, 1,217,632.74 and 279,096.30

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Solution

The fourth proportional to 811,644.48, 1,217,632.74 and 279,096.30 is: 418,701.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,644.48 : 1,217,632.74 = 279,096.30 : x
  2. Step 2: Convert to fraction form
    811,644.48/1,217,632.74 = 279,096.30/x
  3. Step 3: Cross multiply
    811,644.48x = 1,217,632.74 × 279,096.30
  4. Step 4: Simplify right side
    811,644.48x = 339,836,792,492.86
  5. Step 5: Solve for x
    x = 339,836,792,492.86/811,644.48
  6. Step 6: Final answer
    x = 418,701.54

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Double scale
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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.