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Finding the Fourth Proportional to 485,786.96, 670,369.48 and 268,004.32

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Solution

The fourth proportional to 485,786.96, 670,369.48 and 268,004.32 is: 369,836.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,786.96 : 670,369.48 = 268,004.32 : x
  2. Step 2: Convert to fraction form
    485,786.96/670,369.48 = 268,004.32/x
  3. Step 3: Cross multiply
    485,786.96x = 670,369.48 × 268,004.32
  4. Step 4: Simplify right side
    485,786.96x = 179,661,916,636.15
  5. Step 5: Solve for x
    x = 179,661,916,636.15/485,786.96
  6. Step 6: Final answer
    x = 369,836.85

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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.