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Finding the Fourth Proportional to 668,321.05, 922,331.91 and 381,834.94

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Solution

The fourth proportional to 668,321.05, 922,331.91 and 381,834.94 is: 526,960.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,321.05 : 922,331.91 = 381,834.94 : x
  2. Step 2: Convert to fraction form
    668,321.05/922,331.91 = 381,834.94/x
  3. Step 3: Cross multiply
    668,321.05x = 922,331.91 × 381,834.94
  4. Step 4: Simplify right side
    668,321.05x = 352,178,549,514.94
  5. Step 5: Solve for x
    x = 352,178,549,514.94/668,321.05
  6. Step 6: Final answer
    x = 526,960.13

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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.