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Finding the Fourth Proportional to 668,664.36, 922,756.82 and 382,190.60

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Solution

The fourth proportional to 668,664.36, 922,756.82 and 382,190.60 is: 527,423.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,664.36 : 922,756.82 = 382,190.60 : x
  2. Step 2: Convert to fraction form
    668,664.36/922,756.82 = 382,190.60/x
  3. Step 3: Cross multiply
    668,664.36x = 922,756.82 × 382,190.60
  4. Step 4: Simplify right side
    668,664.36x = 352,668,982,689.89
  5. Step 5: Solve for x
    x = 352,668,982,689.89/668,664.36
  6. Step 6: Final answer
    x = 527,423.03

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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.