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Finding the Fourth Proportional to 418,982.92, 628,481.10 and 397,715.56

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Solution

The fourth proportional to 418,982.92, 628,481.10 and 397,715.56 is: 596,579.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,982.92 : 628,481.10 = 397,715.56 : x
  2. Step 2: Convert to fraction form
    418,982.92/628,481.10 = 397,715.56/x
  3. Step 3: Cross multiply
    418,982.92x = 628,481.10 × 397,715.56
  4. Step 4: Simplify right side
    418,982.92x = 249,956,712,635.92
  5. Step 5: Solve for x
    x = 249,956,712,635.92/418,982.92
  6. Step 6: Final answer
    x = 596,579.72

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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.