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Finding the Fourth Proportional to 455,506.60, 628,861.38 and 302,751.88

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Solution

The fourth proportional to 455,506.60, 628,861.38 and 302,751.88 is: 417,971.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,506.60 : 628,861.38 = 302,751.88 : x
  2. Step 2: Convert to fraction form
    455,506.60/628,861.38 = 302,751.88/x
  3. Step 3: Cross multiply
    455,506.60x = 628,861.38 × 302,751.88
  4. Step 4: Simplify right side
    455,506.60x = 190,388,965,054.39
  5. Step 5: Solve for x
    x = 190,388,965,054.39/455,506.60
  6. Step 6: Final answer
    x = 417,971.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.