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Finding the Fourth Proportional to 1,180,365.52, 1,629,030.56 and 721,748.88

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Solution

The fourth proportional to 1,180,365.52, 1,629,030.56 and 721,748.88 is: 996,090.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180,365.52 : 1,629,030.56 = 721,748.88 : x
  2. Step 2: Convert to fraction form
    1,180,365.52/1,629,030.56 = 721,748.88/x
  3. Step 3: Cross multiply
    1,180,365.52x = 1,629,030.56 × 721,748.88
  4. Step 4: Simplify right side
    1,180,365.52x = 1,175,750,982,165.77
  5. Step 5: Solve for x
    x = 1,175,750,982,165.77/1,180,365.52
  6. Step 6: Final answer
    x = 996,090.59

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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.