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Finding the Fourth Proportional to 668,754.12, 922,752.09 and 382,213.38

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Solution

The fourth proportional to 668,754.12, 922,752.09 and 382,213.38 is: 527,380.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,754.12 : 922,752.09 = 382,213.38 : x
  2. Step 2: Convert to fraction form
    668,754.12/922,752.09 = 382,213.38/x
  3. Step 3: Cross multiply
    668,754.12x = 922,752.09 × 382,213.38
  4. Step 4: Simplify right side
    668,754.12x = 352,688,195,220.96
  5. Step 5: Solve for x
    x = 352,688,195,220.96/668,754.12
  6. Step 6: Final answer
    x = 527,380.97

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1.5x scale

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.