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Finding the Fourth Proportional to 664,673.10, 995,697.45 and 397,640.40

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Solution

The fourth proportional to 664,673.10, 995,697.45 and 397,640.40 is: 595,675.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,673.10 : 995,697.45 = 397,640.40 : x
  2. Step 2: Convert to fraction form
    664,673.10/995,697.45 = 397,640.40/x
  3. Step 3: Cross multiply
    664,673.10x = 995,697.45 × 397,640.40
  4. Step 4: Simplify right side
    664,673.10x = 395,929,532,296.98
  5. Step 5: Solve for x
    x = 395,929,532,296.98/664,673.10
  6. Step 6: Final answer
    x = 595,675.58

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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.