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Finding the Fourth Proportional to 638,404.21, 957,888.38 and 334,725.78

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Solution

The fourth proportional to 638,404.21, 957,888.38 and 334,725.78 is: 502,236.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,404.21 : 957,888.38 = 334,725.78 : x
  2. Step 2: Convert to fraction form
    638,404.21/957,888.38 = 334,725.78/x
  3. Step 3: Cross multiply
    638,404.21x = 957,888.38 × 334,725.78
  4. Step 4: Simplify right side
    638,404.21x = 320,629,935,536.25
  5. Step 5: Solve for x
    x = 320,629,935,536.25/638,404.21
  6. Step 6: Final answer
    x = 502,236.56

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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.