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Finding the Fourth Proportional to 714,846.35, 986,487.95 and 392,561.82

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Solution

The fourth proportional to 714,846.35, 986,487.95 and 392,561.82 is: 541,735.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,846.35 : 986,487.95 = 392,561.82 : x
  2. Step 2: Convert to fraction form
    714,846.35/986,487.95 = 392,561.82/x
  3. Step 3: Cross multiply
    714,846.35x = 986,487.95 × 392,561.82
  4. Step 4: Simplify right side
    714,846.35x = 387,257,503,097.26
  5. Step 5: Solve for x
    x = 387,257,503,097.26/714,846.35
  6. Step 6: Final answer
    x = 541,735.31

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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.