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Finding the Fourth Proportional to 669,492.81, 923,494.37 and 397,381.41

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Solution

The fourth proportional to 669,492.81, 923,494.37 and 397,381.41 is: 548,145.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,492.81 : 923,494.37 = 397,381.41 : x
  2. Step 2: Convert to fraction form
    669,492.81/923,494.37 = 397,381.41/x
  3. Step 3: Cross multiply
    669,492.81x = 923,494.37 × 397,381.41
  4. Step 4: Simplify right side
    669,492.81x = 366,979,492,890.76
  5. Step 5: Solve for x
    x = 366,979,492,890.76/669,492.81
  6. Step 6: Final answer
    x = 548,145.53

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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.