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Finding the Fourth Proportional to 536,556.53, 739,708.12 and 428,029.21

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Solution

The fourth proportional to 536,556.53, 739,708.12 and 428,029.21 is: 590,090.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,556.53 : 739,708.12 = 428,029.21 : x
  2. Step 2: Convert to fraction form
    536,556.53/739,708.12 = 428,029.21/x
  3. Step 3: Cross multiply
    536,556.53x = 739,708.12 × 428,029.21
  4. Step 4: Simplify right side
    536,556.53x = 316,616,684,897.69
  5. Step 5: Solve for x
    x = 316,616,684,897.69/536,556.53
  6. Step 6: Final answer
    x = 590,090.08

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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.