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Finding the Fourth Proportional to 648,451.72, 894,705.78 and 380,127.88

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Solution

The fourth proportional to 648,451.72, 894,705.78 and 380,127.88 is: 524,484.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,451.72 : 894,705.78 = 380,127.88 : x
  2. Step 2: Convert to fraction form
    648,451.72/894,705.78 = 380,127.88/x
  3. Step 3: Cross multiply
    648,451.72x = 894,705.78 × 380,127.88
  4. Step 4: Simplify right side
    648,451.72x = 340,102,611,375.15
  5. Step 5: Solve for x
    x = 340,102,611,375.15/648,451.72
  6. Step 6: Final answer
    x = 524,484.09

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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.