Home / 455,359.80-683,039.70-322,390.20

Finding the Fourth Proportional to 455,359.80, 683,039.70 and 322,390.20

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Solution

The fourth proportional to 455,359.80, 683,039.70 and 322,390.20 is: 483,585.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,359.80 : 683,039.70 = 322,390.20 : x
  2. Step 2: Convert to fraction form
    455,359.80/683,039.70 = 322,390.20/x
  3. Step 3: Cross multiply
    455,359.80x = 683,039.70 × 322,390.20
  4. Step 4: Simplify right side
    455,359.80x = 220,205,305,490.94
  5. Step 5: Solve for x
    x = 220,205,305,490.94/455,359.80
  6. Step 6: Final answer
    x = 483,585.30

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Similar ratio
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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.