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Finding the Fourth Proportional to 668,758.30, 922,707.93 and 396,599.92

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Solution

The fourth proportional to 668,758.30, 922,707.93 and 396,599.92 is: 547,202.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,758.30 : 922,707.93 = 396,599.92 : x
  2. Step 2: Convert to fraction form
    668,758.30/922,707.93 = 396,599.92/x
  3. Step 3: Cross multiply
    668,758.30x = 922,707.93 × 396,599.92
  4. Step 4: Simplify right side
    668,758.30x = 365,945,891,221.37
  5. Step 5: Solve for x
    x = 365,945,891,221.37/668,758.30
  6. Step 6: Final answer
    x = 547,202.02

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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.