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Finding the Fourth Proportional to 668,894.86, 1,003,495.52 and 289,879.21

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Solution

The fourth proportional to 668,894.86, 1,003,495.52 and 289,879.21 is: 434,885.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,894.86 : 1,003,495.52 = 289,879.21 : x
  2. Step 2: Convert to fraction form
    668,894.86/1,003,495.52 = 289,879.21/x
  3. Step 3: Cross multiply
    668,894.86x = 1,003,495.52 × 289,879.21
  4. Step 4: Simplify right side
    668,894.86x = 290,892,488,576.14
  5. Step 5: Solve for x
    x = 290,892,488,576.14/668,894.86
  6. Step 6: Final answer
    x = 434,885.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.