Home / 645,688.67-968,907.29-325,865.57

Finding the Fourth Proportional to 645,688.67, 968,907.29 and 325,865.57

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Solution

The fourth proportional to 645,688.67, 968,907.29 and 325,865.57 is: 488,987.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,688.67 : 968,907.29 = 325,865.57 : x
  2. Step 2: Convert to fraction form
    645,688.67/968,907.29 = 325,865.57/x
  3. Step 3: Cross multiply
    645,688.67x = 968,907.29 × 325,865.57
  4. Step 4: Simplify right side
    645,688.67x = 315,733,519,859.14
  5. Step 5: Solve for x
    x = 315,733,519,859.14/645,688.67
  6. Step 6: Final answer
    x = 488,987.24

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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.