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Finding the Fourth Proportional to 668,355.68, 922,245.48 and 381,894.32

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Solution

The fourth proportional to 668,355.68, 922,245.48 and 381,894.32 is: 526,965.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,355.68 : 922,245.48 = 381,894.32 : x
  2. Step 2: Convert to fraction form
    668,355.68/922,245.48 = 381,894.32/x
  3. Step 3: Cross multiply
    668,355.68x = 922,245.48 × 381,894.32
  4. Step 4: Simplify right side
    668,355.68x = 352,200,310,457.67
  5. Step 5: Solve for x
    x = 352,200,310,457.67/668,355.68
  6. Step 6: Final answer
    x = 526,965.39

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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.