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Finding the Fourth Proportional to 866,804.70, 1,297,672.65 and 617,972.70

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Solution

The fourth proportional to 866,804.70, 1,297,672.65 and 617,972.70 is: 925,152.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,804.70 : 1,297,672.65 = 617,972.70 : x
  2. Step 2: Convert to fraction form
    866,804.70/1,297,672.65 = 617,972.70/x
  3. Step 3: Cross multiply
    866,804.70x = 1,297,672.65 × 617,972.70
  4. Step 4: Simplify right side
    866,804.70x = 801,926,271,236.66
  5. Step 5: Solve for x
    x = 801,926,271,236.66/866,804.70
  6. Step 6: Final answer
    x = 925,152.20

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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.