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Finding the Fourth Proportional to 645,692.66, 968,913.28 and 325,869.56

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Solution

The fourth proportional to 645,692.66, 968,913.28 and 325,869.56 is: 488,993.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,692.66 : 968,913.28 = 325,869.56 : x
  2. Step 2: Convert to fraction form
    645,692.66/968,913.28 = 325,869.56/x
  3. Step 3: Cross multiply
    645,692.66x = 968,913.28 × 325,869.56
  4. Step 4: Simplify right side
    645,692.66x = 315,739,344,231.76
  5. Step 5: Solve for x
    x = 315,739,344,231.76/645,692.66
  6. Step 6: Final answer
    x = 488,993.24

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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.