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Finding the Fourth Proportional to 707,757.20, 1,059,043.80 and 521,133.20

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Solution

The fourth proportional to 707,757.20, 1,059,043.80 and 521,133.20 is: 779,791.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,757.20 : 1,059,043.80 = 521,133.20 : x
  2. Step 2: Convert to fraction form
    707,757.20/1,059,043.80 = 521,133.20/x
  3. Step 3: Cross multiply
    707,757.20x = 1,059,043.80 × 521,133.20
  4. Step 4: Simplify right side
    707,757.20x = 551,902,884,434.16
  5. Step 5: Solve for x
    x = 551,902,884,434.16/707,757.20
  6. Step 6: Final answer
    x = 779,791.27

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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.