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Finding the Fourth Proportional to 613,614.40, 846,891.12 and 395,761.84

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Solution

The fourth proportional to 613,614.40, 846,891.12 and 395,761.84 is: 546,217.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,614.40 : 846,891.12 = 395,761.84 : x
  2. Step 2: Convert to fraction form
    613,614.40/846,891.12 = 395,761.84/x
  3. Step 3: Cross multiply
    613,614.40x = 846,891.12 × 395,761.84
  4. Step 4: Simplify right side
    613,614.40x = 335,167,187,930.86
  5. Step 5: Solve for x
    x = 335,167,187,930.86/613,614.40
  6. Step 6: Final answer
    x = 546,217.93

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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.