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Finding the Fourth Proportional to 603,915.60, 903,540.60 and 393,963.60

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Solution

The fourth proportional to 603,915.60, 903,540.60 and 393,963.60 is: 589,423.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,915.60 : 903,540.60 = 393,963.60 : x
  2. Step 2: Convert to fraction form
    603,915.60/903,540.60 = 393,963.60/x
  3. Step 3: Cross multiply
    603,915.60x = 903,540.60 × 393,963.60
  4. Step 4: Simplify right side
    603,915.60x = 355,962,107,522.16
  5. Step 5: Solve for x
    x = 355,962,107,522.16/603,915.60
  6. Step 6: Final answer
    x = 589,423.60

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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.