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Finding the Fourth Proportional to 664,444.80, 995,986.80 and 326,966.40

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Solution

The fourth proportional to 664,444.80, 995,986.80 and 326,966.40 is: 490,114.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,444.80 : 995,986.80 = 326,966.40 : x
  2. Step 2: Convert to fraction form
    664,444.80/995,986.80 = 326,966.40/x
  3. Step 3: Cross multiply
    664,444.80x = 995,986.80 × 326,966.40
  4. Step 4: Simplify right side
    664,444.80x = 325,654,218,443.52
  5. Step 5: Solve for x
    x = 325,654,218,443.52/664,444.80
  6. Step 6: Final answer
    x = 490,114.78

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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.