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Finding the Fourth Proportional to 668,401.56, 922,278.54 and 377,880.36

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Solution

The fourth proportional to 668,401.56, 922,278.54 and 377,880.36 is: 521,409.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,401.56 : 922,278.54 = 377,880.36 : x
  2. Step 2: Convert to fraction form
    668,401.56/922,278.54 = 377,880.36/x
  3. Step 3: Cross multiply
    668,401.56x = 922,278.54 × 377,880.36
  4. Step 4: Simplify right side
    668,401.56x = 348,510,946,715.47
  5. Step 5: Solve for x
    x = 348,510,946,715.47/668,401.56
  6. Step 6: Final answer
    x = 521,409.54

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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.