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Finding the Fourth Proportional to 641,399.96, 885,225.40 and 369,414.92

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Solution

The fourth proportional to 641,399.96, 885,225.40 and 369,414.92 is: 509,846.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,399.96 : 885,225.40 = 369,414.92 : x
  2. Step 2: Convert to fraction form
    641,399.96/885,225.40 = 369,414.92/x
  3. Step 3: Cross multiply
    641,399.96x = 885,225.40 × 369,414.92
  4. Step 4: Simplify right side
    641,399.96x = 327,015,470,322.97
  5. Step 5: Solve for x
    x = 327,015,470,322.97/641,399.96
  6. Step 6: Final answer
    x = 509,846.42

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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.