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Finding the Fourth Proportional to 666,197.52, 919,329.66 and 379,809.84

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Solution

The fourth proportional to 666,197.52, 919,329.66 and 379,809.84 is: 524,124.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,197.52 : 919,329.66 = 379,809.84 : x
  2. Step 2: Convert to fraction form
    666,197.52/919,329.66 = 379,809.84/x
  3. Step 3: Cross multiply
    666,197.52x = 919,329.66 × 379,809.84
  4. Step 4: Simplify right side
    666,197.52x = 349,170,451,071.85
  5. Step 5: Solve for x
    x = 349,170,451,071.85/666,197.52
  6. Step 6: Final answer
    x = 524,124.51

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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.