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Finding the Fourth Proportional to 1,230,663.60, 1,845,995.40 and 873,745.20

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Solution

The fourth proportional to 1,230,663.60, 1,845,995.40 and 873,745.20 is: 1,310,617.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,663.60 : 1,845,995.40 = 873,745.20 : x
  2. Step 2: Convert to fraction form
    1,230,663.60/1,845,995.40 = 873,745.20/x
  3. Step 3: Cross multiply
    1,230,663.60x = 1,845,995.40 × 873,745.20
  4. Step 4: Simplify right side
    1,230,663.60x = 1,612,929,619,972.08
  5. Step 5: Solve for x
    x = 1,612,929,619,972.08/1,230,663.60
  6. Step 6: Final answer
    x = 1,310,617.80

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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.