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Finding the Fourth Proportional to 859,693.10, 1,289,706.10 and 327,173.18

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Solution

The fourth proportional to 859,693.10, 1,289,706.10 and 327,173.18 is: 490,823.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,693.10 : 1,289,706.10 = 327,173.18 : x
  2. Step 2: Convert to fraction form
    859,693.10/1,289,706.10 = 327,173.18/x
  3. Step 3: Cross multiply
    859,693.10x = 1,289,706.10 × 327,173.18
  4. Step 4: Simplify right side
    859,693.10x = 421,957,238,735.94
  5. Step 5: Solve for x
    x = 421,957,238,735.94/859,693.10
  6. Step 6: Final answer
    x = 490,823.11

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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.