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Finding the Fourth Proportional to 664,392.30, 995,400.45 and 404,256.30

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Solution

The fourth proportional to 664,392.30, 995,400.45 and 404,256.30 is: 605,661.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,392.30 : 995,400.45 = 404,256.30 : x
  2. Step 2: Convert to fraction form
    664,392.30/995,400.45 = 404,256.30/x
  3. Step 3: Cross multiply
    664,392.30x = 995,400.45 × 404,256.30
  4. Step 4: Simplify right side
    664,392.30x = 402,396,902,935.34
  5. Step 5: Solve for x
    x = 402,396,902,935.34/664,392.30
  6. Step 6: Final answer
    x = 605,661.60

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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.