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Finding the Fourth Proportional to 634,008.75, 875,021.58 and 392,369.15

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Solution

The fourth proportional to 634,008.75, 875,021.58 and 392,369.15 is: 541,524.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,008.75 : 875,021.58 = 392,369.15 : x
  2. Step 2: Convert to fraction form
    634,008.75/875,021.58 = 392,369.15/x
  3. Step 3: Cross multiply
    634,008.75x = 875,021.58 × 392,369.15
  4. Step 4: Simplify right side
    634,008.75x = 343,331,469,201.15
  5. Step 5: Solve for x
    x = 343,331,469,201.15/634,008.75
  6. Step 6: Final answer
    x = 541,524.81

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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.