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Finding the Fourth Proportional to 669,483.50, 923,428.67 and 427,658.67

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Solution

The fourth proportional to 669,483.50, 923,428.67 and 427,658.67 is: 589,876.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,483.50 : 923,428.67 = 427,658.67 : x
  2. Step 2: Convert to fraction form
    669,483.50/923,428.67 = 427,658.67/x
  3. Step 3: Cross multiply
    669,483.50x = 923,428.67 × 427,658.67
  4. Step 4: Simplify right side
    669,483.50x = 394,912,274,713.78
  5. Step 5: Solve for x
    x = 394,912,274,713.78/669,483.50
  6. Step 6: Final answer
    x = 589,876.04

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1.5x scale

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.