Home / 455,629.20-683,443.80-432,819.60

Finding the Fourth Proportional to 455,629.20, 683,443.80 and 432,819.60

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Solution

The fourth proportional to 455,629.20, 683,443.80 and 432,819.60 is: 649,229.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,629.20 : 683,443.80 = 432,819.60 : x
  2. Step 2: Convert to fraction form
    455,629.20/683,443.80 = 432,819.60/x
  3. Step 3: Cross multiply
    455,629.20x = 683,443.80 × 432,819.60
  4. Step 4: Simplify right side
    455,629.20x = 295,807,872,138.48
  5. Step 5: Solve for x
    x = 295,807,872,138.48/455,629.20
  6. Step 6: Final answer
    x = 649,229.40

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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.