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Finding the Fourth Proportional to 425,715.41, 637,850.50 and 256,880.97

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Solution

The fourth proportional to 425,715.41, 637,850.50 and 256,880.97 is: 384,885.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,715.41 : 637,850.50 = 256,880.97 : x
  2. Step 2: Convert to fraction form
    425,715.41/637,850.50 = 256,880.97/x
  3. Step 3: Cross multiply
    425,715.41x = 637,850.50 × 256,880.97
  4. Step 4: Simplify right side
    425,715.41x = 163,851,654,512.78
  5. Step 5: Solve for x
    x = 163,851,654,512.78/425,715.41
  6. Step 6: Final answer
    x = 384,885.42

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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.