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Finding the Fourth Proportional to 1,313,982.62, 1,968,417.55 and 863,334.26

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Solution

The fourth proportional to 1,313,982.62, 1,968,417.55 and 863,334.26 is: 1,293,321.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,982.62 : 1,968,417.55 = 863,334.26 : x
  2. Step 2: Convert to fraction form
    1,313,982.62/1,968,417.55 = 863,334.26/x
  3. Step 3: Cross multiply
    1,313,982.62x = 1,968,417.55 × 863,334.26
  4. Step 4: Simplify right side
    1,313,982.62x = 1,699,402,308,900.26
  5. Step 5: Solve for x
    x = 1,699,402,308,900.26/1,313,982.62
  6. Step 6: Final answer
    x = 1,293,321.76

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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.