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Finding the Fourth Proportional to 668,742.30, 922,856.67 and 366,936.30

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Solution

The fourth proportional to 668,742.30, 922,856.67 and 366,936.30 is: 506,367.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,742.30 : 922,856.67 = 366,936.30 : x
  2. Step 2: Convert to fraction form
    668,742.30/922,856.67 = 366,936.30/x
  3. Step 3: Cross multiply
    668,742.30x = 922,856.67 × 366,936.30
  4. Step 4: Simplify right side
    668,742.30x = 338,629,611,920.12
  5. Step 5: Solve for x
    x = 338,629,611,920.12/668,742.30
  6. Step 6: Final answer
    x = 506,367.87

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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.