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Finding the Fourth Proportional to 668,664.48, 922,756.97 and 382,190.72

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Solution

The fourth proportional to 668,664.48, 922,756.97 and 382,190.72 is: 527,423.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,664.48 : 922,756.97 = 382,190.72 : x
  2. Step 2: Convert to fraction form
    668,664.48/922,756.97 = 382,190.72/x
  3. Step 3: Cross multiply
    668,664.48x = 922,756.97 × 382,190.72
  4. Step 4: Simplify right side
    668,664.48x = 352,669,149,397.90
  5. Step 5: Solve for x
    x = 352,669,149,397.90/668,664.48
  6. Step 6: Final answer
    x = 527,423.18

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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.