Home / 645,780.72-968,707.49-196,516.20

Finding the Fourth Proportional to 645,780.72, 968,707.49 and 196,516.20

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Solution

The fourth proportional to 645,780.72, 968,707.49 and 196,516.20 is: 294,785.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,780.72 : 968,707.49 = 196,516.20 : x
  2. Step 2: Convert to fraction form
    645,780.72/968,707.49 = 196,516.20/x
  3. Step 3: Cross multiply
    645,780.72x = 968,707.49 × 196,516.20
  4. Step 4: Simplify right side
    645,780.72x = 190,366,713,863.76
  5. Step 5: Solve for x
    x = 190,366,713,863.76/645,780.72
  6. Step 6: Final answer
    x = 294,785.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.