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Finding the Fourth Proportional to 721,726.77, 995,871.99 and 415,743.39

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Solution

The fourth proportional to 721,726.77, 995,871.99 and 415,743.39 is: 573,661.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,726.77 : 995,871.99 = 415,743.39 : x
  2. Step 2: Convert to fraction form
    721,726.77/995,871.99 = 415,743.39/x
  3. Step 3: Cross multiply
    721,726.77x = 995,871.99 × 415,743.39
  4. Step 4: Simplify right side
    721,726.77x = 414,027,197,128.65
  5. Step 5: Solve for x
    x = 414,027,197,128.65/721,726.77
  6. Step 6: Final answer
    x = 573,661.97

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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.