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Finding the Fourth Proportional to 721,574.96, 995,878.58 and 415,591.79

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Solution

The fourth proportional to 721,574.96, 995,878.58 and 415,591.79 is: 573,577.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,574.96 : 995,878.58 = 415,591.79 : x
  2. Step 2: Convert to fraction form
    721,574.96/995,878.58 = 415,591.79/x
  3. Step 3: Cross multiply
    721,574.96x = 995,878.58 × 415,591.79
  4. Step 4: Simplify right side
    721,574.96x = 413,878,954,627.51
  5. Step 5: Solve for x
    x = 413,878,954,627.51/721,574.96
  6. Step 6: Final answer
    x = 573,577.22

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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.