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Finding the Fourth Proportional to 645,930, 968,612.28 and 325,884.96

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Solution

The fourth proportional to 645,930, 968,612.28 and 325,884.96 is: 488,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,930 : 968,612.28 = 325,884.96 : x
  2. Step 2: Convert to fraction form
    645,930/968,612.28 = 325,884.96/x
  3. Step 3: Cross multiply
    645,930x = 968,612.28 × 325,884.96
  4. Step 4: Simplify right side
    645,930x = 315,656,174,123.31
  5. Step 5: Solve for x
    x = 315,656,174,123.31/645,930
  6. Step 6: Final answer
    x = 488,684.80

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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.