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Finding the Fourth Proportional to 721,465.27, 995,435.25 and 430,957.96

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Solution

The fourth proportional to 721,465.27, 995,435.25 and 430,957.96 is: 594,610.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,465.27 : 995,435.25 = 430,957.96 : x
  2. Step 2: Convert to fraction form
    721,465.27/995,435.25 = 430,957.96/x
  3. Step 3: Cross multiply
    721,465.27x = 995,435.25 × 430,957.96
  4. Step 4: Simplify right side
    721,465.27x = 428,990,744,652.09
  5. Step 5: Solve for x
    x = 428,990,744,652.09/721,465.27
  6. Step 6: Final answer
    x = 594,610.39

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Double scale
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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.