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Finding the Fourth Proportional to 668,715.30, 922,819.41 and 366,909.30

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Solution

The fourth proportional to 668,715.30, 922,819.41 and 366,909.30 is: 506,330.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,715.30 : 922,819.41 = 366,909.30 : x
  2. Step 2: Convert to fraction form
    668,715.30/922,819.41 = 366,909.30/x
  3. Step 3: Cross multiply
    668,715.30x = 922,819.41 × 366,909.30
  4. Step 4: Simplify right side
    668,715.30x = 338,591,023,749.51
  5. Step 5: Solve for x
    x = 338,591,023,749.51/668,715.30
  6. Step 6: Final answer
    x = 506,330.61

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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.