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Finding the Fourth Proportional to 494,916.40, 741,062.40 and 389,940.40

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Solution

The fourth proportional to 494,916.40, 741,062.40 and 389,940.40 is: 583,876.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,916.40 : 741,062.40 = 389,940.40 : x
  2. Step 2: Convert to fraction form
    494,916.40/741,062.40 = 389,940.40/x
  3. Step 3: Cross multiply
    494,916.40x = 741,062.40 × 389,940.40
  4. Step 4: Simplify right side
    494,916.40x = 288,970,168,680.96
  5. Step 5: Solve for x
    x = 288,970,168,680.96/494,916.40
  6. Step 6: Final answer
    x = 583,876.73

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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.