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Finding the Fourth Proportional to 709,540.80, 1,064,656.80 and 541,003.20

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Solution

The fourth proportional to 709,540.80, 1,064,656.80 and 541,003.20 is: 811,768.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,540.80 : 1,064,656.80 = 541,003.20 : x
  2. Step 2: Convert to fraction form
    709,540.80/1,064,656.80 = 541,003.20/x
  3. Step 3: Cross multiply
    709,540.80x = 1,064,656.80 × 541,003.20
  4. Step 4: Simplify right side
    709,540.80x = 575,982,735,701.76
  5. Step 5: Solve for x
    x = 575,982,735,701.76/709,540.80
  6. Step 6: Final answer
    x = 811,768.31

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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.