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Finding the Fourth Proportional to 1,247,321.85, 1,721,303.99 and 674,362.02

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Solution

The fourth proportional to 1,247,321.85, 1,721,303.99 and 674,362.02 is: 930,619.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,321.85 : 1,721,303.99 = 674,362.02 : x
  2. Step 2: Convert to fraction form
    1,247,321.85/1,721,303.99 = 674,362.02/x
  3. Step 3: Cross multiply
    1,247,321.85x = 1,721,303.99 × 674,362.02
  4. Step 4: Simplify right side
    1,247,321.85x = 1,160,782,043,239.04
  5. Step 5: Solve for x
    x = 1,160,782,043,239.04/1,247,321.85
  6. Step 6: Final answer
    x = 930,619.50

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.