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Finding the Fourth Proportional to 1,301,258.11, 1,795,848.56 and 728,290.03

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Solution

The fourth proportional to 1,301,258.11, 1,795,848.56 and 728,290.03 is: 1,005,103.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301,258.11 : 1,795,848.56 = 728,290.03 : x
  2. Step 2: Convert to fraction form
    1,301,258.11/1,795,848.56 = 728,290.03/x
  3. Step 3: Cross multiply
    1,301,258.11x = 1,795,848.56 × 728,290.03
  4. Step 4: Simplify right side
    1,301,258.11x = 1,307,898,597,996.41
  5. Step 5: Solve for x
    x = 1,307,898,597,996.41/1,301,258.11
  6. Step 6: Final answer
    x = 1,005,103.13

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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.