Home / 820,907.10-1,231,360.65-673,284.60

Finding the Fourth Proportional to 820,907.10, 1,231,360.65 and 673,284.60

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Solution

The fourth proportional to 820,907.10, 1,231,360.65 and 673,284.60 is: 1,009,926.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,907.10 : 1,231,360.65 = 673,284.60 : x
  2. Step 2: Convert to fraction form
    820,907.10/1,231,360.65 = 673,284.60/x
  3. Step 3: Cross multiply
    820,907.10x = 1,231,360.65 × 673,284.60
  4. Step 4: Simplify right side
    820,907.10x = 829,056,162,690.99
  5. Step 5: Solve for x
    x = 829,056,162,690.99/820,907.10
  6. Step 6: Final answer
    x = 1,009,926.90

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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.