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Finding the Fourth Proportional to 488,480.35, 674,431.86 and 304,998.34

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Solution

The fourth proportional to 488,480.35, 674,431.86 and 304,998.34 is: 421,103.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,480.35 : 674,431.86 = 304,998.34 : x
  2. Step 2: Convert to fraction form
    488,480.35/674,431.86 = 304,998.34/x
  3. Step 3: Cross multiply
    488,480.35x = 674,431.86 × 304,998.34
  4. Step 4: Simplify right side
    488,480.35x = 205,700,597,743.11
  5. Step 5: Solve for x
    x = 205,700,597,743.11/488,480.35
  6. Step 6: Final answer
    x = 421,103.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.