Home / 880,907.20-1,321,360.80-821,420.80

Finding the Fourth Proportional to 880,907.20, 1,321,360.80 and 821,420.80

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Solution

The fourth proportional to 880,907.20, 1,321,360.80 and 821,420.80 is: 1,232,131.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,907.20 : 1,321,360.80 = 821,420.80 : x
  2. Step 2: Convert to fraction form
    880,907.20/1,321,360.80 = 821,420.80/x
  3. Step 3: Cross multiply
    880,907.20x = 1,321,360.80 × 821,420.80
  4. Step 4: Simplify right side
    880,907.20x = 1,085,393,245,424.64
  5. Step 5: Solve for x
    x = 1,085,393,245,424.64/880,907.20
  6. Step 6: Final answer
    x = 1,232,131.20

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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.