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Finding the Fourth Proportional to 425,739.39, 637,886.42 and 256,904.97

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Solution

The fourth proportional to 425,739.39, 637,886.42 and 256,904.97 is: 384,921.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,739.39 : 637,886.42 = 256,904.97 : x
  2. Step 2: Convert to fraction form
    425,739.39/637,886.42 = 256,904.97/x
  3. Step 3: Cross multiply
    425,739.39x = 637,886.42 × 256,904.97
  4. Step 4: Simplify right side
    425,739.39x = 163,876,191,593.51
  5. Step 5: Solve for x
    x = 163,876,191,593.51/425,739.39
  6. Step 6: Final answer
    x = 384,921.38

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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.