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Finding the Fourth Proportional to 700,745.67, 966,021.25 and 499,191.75

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Solution

The fourth proportional to 700,745.67, 966,021.25 and 499,191.75 is: 688,166.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,745.67 : 966,021.25 = 499,191.75 : x
  2. Step 2: Convert to fraction form
    700,745.67/966,021.25 = 499,191.75/x
  3. Step 3: Cross multiply
    700,745.67x = 966,021.25 × 499,191.75
  4. Step 4: Simplify right side
    700,745.67x = 482,229,838,324.69
  5. Step 5: Solve for x
    x = 482,229,838,324.69/700,745.67
  6. Step 6: Final answer
    x = 688,166.70

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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.