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Finding the Fourth Proportional to 494,711.40, 742,358.70 and 326,717.40

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Solution

The fourth proportional to 494,711.40, 742,358.70 and 326,717.40 is: 490,268.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,711.40 : 742,358.70 = 326,717.40 : x
  2. Step 2: Convert to fraction form
    494,711.40/742,358.70 = 326,717.40/x
  3. Step 3: Cross multiply
    494,711.40x = 742,358.70 × 326,717.40
  4. Step 4: Simplify right side
    494,711.40x = 242,541,504,331.38
  5. Step 5: Solve for x
    x = 242,541,504,331.38/494,711.40
  6. Step 6: Final answer
    x = 490,268.68

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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.