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Finding the Fourth Proportional to 425,795.34, 637,969.98 and 256,960.92

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Solution

The fourth proportional to 425,795.34, 637,969.98 and 256,960.92 is: 385,005.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,795.34 : 637,969.98 = 256,960.92 : x
  2. Step 2: Convert to fraction form
    425,795.34/637,969.98 = 256,960.92/x
  3. Step 3: Cross multiply
    425,795.34x = 637,969.98 × 256,960.92
  4. Step 4: Simplify right side
    425,795.34x = 163,933,352,993.18
  5. Step 5: Solve for x
    x = 163,933,352,993.18/425,795.34
  6. Step 6: Final answer
    x = 385,005.04

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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.