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Finding the Fourth Proportional to 425,783.01, 637,951.54 and 256,948.56

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Solution

The fourth proportional to 425,783.01, 637,951.54 and 256,948.56 is: 384,986.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,783.01 : 637,951.54 = 256,948.56 : x
  2. Step 2: Convert to fraction form
    425,783.01/637,951.54 = 256,948.56/x
  3. Step 3: Cross multiply
    425,783.01x = 637,951.54 × 256,948.56
  4. Step 4: Simplify right side
    425,783.01x = 163,920,728,910.41
  5. Step 5: Solve for x
    x = 163,920,728,910.41/425,783.01
  6. Step 6: Final answer
    x = 384,986.54

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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.