Home / 821,408.80-1,232,296.80-288,947.20

Finding the Fourth Proportional to 821,408.80, 1,232,296.80 and 288,947.20

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Solution

The fourth proportional to 821,408.80, 1,232,296.80 and 288,947.20 is: 433,485.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,408.80 : 1,232,296.80 = 288,947.20 : x
  2. Step 2: Convert to fraction form
    821,408.80/1,232,296.80 = 288,947.20/x
  3. Step 3: Cross multiply
    821,408.80x = 1,232,296.80 × 288,947.20
  4. Step 4: Simplify right side
    821,408.80x = 356,068,709,928.96
  5. Step 5: Solve for x
    x = 356,068,709,928.96/821,408.80
  6. Step 6: Final answer
    x = 433,485.39

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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.