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Finding the Fourth Proportional to 425,778.45, 637,944.70 and 256,944.01

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Solution

The fourth proportional to 425,778.45, 637,944.70 and 256,944.01 is: 384,979.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,778.45 : 637,944.70 = 256,944.01 : x
  2. Step 2: Convert to fraction form
    425,778.45/637,944.70 = 256,944.01/x
  3. Step 3: Cross multiply
    425,778.45x = 637,944.70 × 256,944.01
  4. Step 4: Simplify right side
    425,778.45x = 163,916,064,901.80
  5. Step 5: Solve for x
    x = 163,916,064,901.80/425,778.45
  6. Step 6: Final answer
    x = 384,979.71

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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.