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Finding the Fourth Proportional to 418,909.24, 628,954.35 and 300,516.04

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Solution

The fourth proportional to 418,909.24, 628,954.35 and 300,516.04 is: 451,197.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,909.24 : 628,954.35 = 300,516.04 : x
  2. Step 2: Convert to fraction form
    418,909.24/628,954.35 = 300,516.04/x
  3. Step 3: Cross multiply
    418,909.24x = 628,954.35 × 300,516.04
  4. Step 4: Simplify right side
    418,909.24x = 189,010,870,602.77
  5. Step 5: Solve for x
    x = 189,010,870,602.77/418,909.24
  6. Step 6: Final answer
    x = 451,197.66

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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.