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Finding the Fourth Proportional to 455,400.80, 683,101.20 and 305,712.80

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Solution

The fourth proportional to 455,400.80, 683,101.20 and 305,712.80 is: 458,569.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,400.80 : 683,101.20 = 305,712.80 : x
  2. Step 2: Convert to fraction form
    455,400.80/683,101.20 = 305,712.80/x
  3. Step 3: Cross multiply
    455,400.80x = 683,101.20 × 305,712.80
  4. Step 4: Simplify right side
    455,400.80x = 208,832,780,535.36
  5. Step 5: Solve for x
    x = 208,832,780,535.36/455,400.80
  6. Step 6: Final answer
    x = 458,569.20

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Similar ratio
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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.