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Finding the Fourth Proportional to 721,960.80, 995,993.09 and 435,321.65

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Solution

The fourth proportional to 721,960.80, 995,993.09 and 435,321.65 is: 600,555.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,960.80 : 995,993.09 = 435,321.65 : x
  2. Step 2: Convert to fraction form
    721,960.80/995,993.09 = 435,321.65/x
  3. Step 3: Cross multiply
    721,960.80x = 995,993.09 × 435,321.65
  4. Step 4: Simplify right side
    721,960.80x = 433,577,350,660.81
  5. Step 5: Solve for x
    x = 433,577,350,660.81/721,960.80
  6. Step 6: Final answer
    x = 600,555.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.