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Finding the Fourth Proportional to 454,654, 682,008.34 and 139,113.64

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Solution

The fourth proportional to 454,654, 682,008.34 and 139,113.64 is: 208,678.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,654 : 682,008.34 = 139,113.64 : x
  2. Step 2: Convert to fraction form
    454,654/682,008.34 = 139,113.64/x
  3. Step 3: Cross multiply
    454,654x = 682,008.34 × 139,113.64
  4. Step 4: Simplify right side
    454,654x = 94,876,662,687.76
  5. Step 5: Solve for x
    x = 94,876,662,687.76/454,654
  6. Step 6: Final answer
    x = 208,678.83

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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.