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Finding the Fourth Proportional to 696,859.46, 962,078.30 and 438,957.49

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Solution

The fourth proportional to 696,859.46, 962,078.30 and 438,957.49 is: 606,021.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,859.46 : 962,078.30 = 438,957.49 : x
  2. Step 2: Convert to fraction form
    696,859.46/962,078.30 = 438,957.49/x
  3. Step 3: Cross multiply
    696,859.46x = 962,078.30 × 438,957.49
  4. Step 4: Simplify right side
    696,859.46x = 422,311,472,797.57
  5. Step 5: Solve for x
    x = 422,311,472,797.57/696,859.46
  6. Step 6: Final answer
    x = 606,021.01

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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.