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Finding the Fourth Proportional to 720,725.15, 994,524.59 and 398,383.22

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Solution

The fourth proportional to 720,725.15, 994,524.59 and 398,383.22 is: 549,726.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,725.15 : 994,524.59 = 398,383.22 : x
  2. Step 2: Convert to fraction form
    720,725.15/994,524.59 = 398,383.22/x
  3. Step 3: Cross multiply
    720,725.15x = 994,524.59 × 398,383.22
  4. Step 4: Simplify right side
    720,725.15x = 396,201,901,568.84
  5. Step 5: Solve for x
    x = 396,201,901,568.84/720,725.15
  6. Step 6: Final answer
    x = 549,726.76

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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.