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Finding the Fourth Proportional to 425,778.51, 637,944.78 and 256,944.08

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Solution

The fourth proportional to 425,778.51, 637,944.78 and 256,944.08 is: 384,979.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,778.51 : 637,944.78 = 256,944.08 : x
  2. Step 2: Convert to fraction form
    425,778.51/637,944.78 = 256,944.08/x
  3. Step 3: Cross multiply
    425,778.51x = 637,944.78 × 256,944.08
  4. Step 4: Simplify right side
    425,778.51x = 163,916,131,398.18
  5. Step 5: Solve for x
    x = 163,916,131,398.18/425,778.51
  6. Step 6: Final answer
    x = 384,979.81

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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.