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Finding the Fourth Proportional to 454,820.20, 680,918.10 and 277,673.20

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Solution

The fourth proportional to 454,820.20, 680,918.10 and 277,673.20 is: 415,708.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,820.20 : 680,918.10 = 277,673.20 : x
  2. Step 2: Convert to fraction form
    454,820.20/680,918.10 = 277,673.20/x
  3. Step 3: Cross multiply
    454,820.20x = 680,918.10 × 277,673.20
  4. Step 4: Simplify right side
    454,820.20x = 189,072,707,764.92
  5. Step 5: Solve for x
    x = 189,072,707,764.92/454,820.20
  6. Step 6: Final answer
    x = 415,708.69

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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.