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Finding the Fourth Proportional to 1,321,662.34, 1,823,966.12 and 748,814.14

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Solution

The fourth proportional to 1,321,662.34, 1,823,966.12 and 748,814.14 is: 1,033,404.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,662.34 : 1,823,966.12 = 748,814.14 : x
  2. Step 2: Convert to fraction form
    1,321,662.34/1,823,966.12 = 748,814.14/x
  3. Step 3: Cross multiply
    1,321,662.34x = 1,823,966.12 × 748,814.14
  4. Step 4: Simplify right side
    1,321,662.34x = 1,365,811,608,673.04
  5. Step 5: Solve for x
    x = 1,365,811,608,673.04/1,321,662.34
  6. Step 6: Final answer
    x = 1,033,404.35

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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.