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Finding the Fourth Proportional to 961,560, 1,326,794.40 and 531,756

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Solution

The fourth proportional to 961,560, 1,326,794.40 and 531,756 is: 733,735.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,560 : 1,326,794.40 = 531,756 : x
  2. Step 2: Convert to fraction form
    961,560/1,326,794.40 = 531,756/x
  3. Step 3: Cross multiply
    961,560x = 1,326,794.40 × 531,756
  4. Step 4: Simplify right side
    961,560x = 705,530,882,966.40
  5. Step 5: Solve for x
    x = 705,530,882,966.40/961,560
  6. Step 6: Final answer
    x = 733,735.68

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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.