Home / 821,323.20-1,232,157.60-347,764.80

Finding the Fourth Proportional to 821,323.20, 1,232,157.60 and 347,764.80

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Solution

The fourth proportional to 821,323.20, 1,232,157.60 and 347,764.80 is: 521,720.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,323.20 : 1,232,157.60 = 347,764.80 : x
  2. Step 2: Convert to fraction form
    821,323.20/1,232,157.60 = 347,764.80/x
  3. Step 3: Cross multiply
    821,323.20x = 1,232,157.60 × 347,764.80
  4. Step 4: Simplify right side
    821,323.20x = 428,501,041,332.48
  5. Step 5: Solve for x
    x = 428,501,041,332.48/821,323.20
  6. Step 6: Final answer
    x = 521,720.37

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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.