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Finding the Fourth Proportional to 425,778.56, 637,944.85 and 256,944.12

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Solution

The fourth proportional to 425,778.56, 637,944.85 and 256,944.12 is: 384,979.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,778.56 : 637,944.85 = 256,944.12 : x
  2. Step 2: Convert to fraction form
    425,778.56/637,944.85 = 256,944.12/x
  3. Step 3: Cross multiply
    425,778.56x = 637,944.85 × 256,944.12
  4. Step 4: Simplify right side
    425,778.56x = 163,916,176,743.32
  5. Step 5: Solve for x
    x = 163,916,176,743.32/425,778.56
  6. Step 6: Final answer
    x = 384,979.88

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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.