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Finding the Fourth Proportional to 685,157.16, 945,492.75 and 379,234.14

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Solution

The fourth proportional to 685,157.16, 945,492.75 and 379,234.14 is: 523,329.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,157.16 : 945,492.75 = 379,234.14 : x
  2. Step 2: Convert to fraction form
    685,157.16/945,492.75 = 379,234.14/x
  3. Step 3: Cross multiply
    685,157.16x = 945,492.75 × 379,234.14
  4. Step 4: Simplify right side
    685,157.16x = 358,563,126,376.89
  5. Step 5: Solve for x
    x = 358,563,126,376.89/685,157.16
  6. Step 6: Final answer
    x = 523,329.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.