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Finding the Fourth Proportional to 918,951.48, 1,378,245.48 and 873,381.12

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Solution

The fourth proportional to 918,951.48, 1,378,245.48 and 873,381.12 is: 1,309,898.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,951.48 : 1,378,245.48 = 873,381.12 : x
  2. Step 2: Convert to fraction form
    918,951.48/1,378,245.48 = 873,381.12/x
  3. Step 3: Cross multiply
    918,951.48x = 1,378,245.48 × 873,381.12
  4. Step 4: Simplify right side
    918,951.48x = 1,203,733,580,957.34
  5. Step 5: Solve for x
    x = 1,203,733,580,957.34/918,951.48
  6. Step 6: Final answer
    x = 1,309,898.95

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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.