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Finding the Fourth Proportional to 668,340, 922,309.20 and 366,534

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Solution

The fourth proportional to 668,340, 922,309.20 and 366,534 is: 505,816.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,340 : 922,309.20 = 366,534 : x
  2. Step 2: Convert to fraction form
    668,340/922,309.20 = 366,534/x
  3. Step 3: Cross multiply
    668,340x = 922,309.20 × 366,534
  4. Step 4: Simplify right side
    668,340x = 338,057,680,312.80
  5. Step 5: Solve for x
    x = 338,057,680,312.80/668,340
  6. Step 6: Final answer
    x = 505,816.92

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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.