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Finding the Fourth Proportional to 455,672.80, 683,509.20 and 322,703.20

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Solution

The fourth proportional to 455,672.80, 683,509.20 and 322,703.20 is: 484,054.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,672.80 : 683,509.20 = 322,703.20 : x
  2. Step 2: Convert to fraction form
    455,672.80/683,509.20 = 322,703.20/x
  3. Step 3: Cross multiply
    455,672.80x = 683,509.20 × 322,703.20
  4. Step 4: Simplify right side
    455,672.80x = 220,570,606,069.44
  5. Step 5: Solve for x
    x = 220,570,606,069.44/455,672.80
  6. Step 6: Final answer
    x = 484,054.80

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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.