Home / 821,347.20-1,232,193.60-347,788.80

Finding the Fourth Proportional to 821,347.20, 1,232,193.60 and 347,788.80

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Solution

The fourth proportional to 821,347.20, 1,232,193.60 and 347,788.80 is: 521,756.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,347.20 : 1,232,193.60 = 347,788.80 : x
  2. Step 2: Convert to fraction form
    821,347.20/1,232,193.60 = 347,788.80/x
  3. Step 3: Cross multiply
    821,347.20x = 1,232,193.60 × 347,788.80
  4. Step 4: Simplify right side
    821,347.20x = 428,543,133,511.68
  5. Step 5: Solve for x
    x = 428,543,133,511.68/821,347.20
  6. Step 6: Final answer
    x = 521,756.37

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1.5x scale

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.