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Finding the Fourth Proportional to 511,537.26, 705,697.47 and 487,820.46

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Solution

The fourth proportional to 511,537.26, 705,697.47 and 487,820.46 is: 672,978.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,537.26 : 705,697.47 = 487,820.46 : x
  2. Step 2: Convert to fraction form
    511,537.26/705,697.47 = 487,820.46/x
  3. Step 3: Cross multiply
    511,537.26x = 705,697.47 × 487,820.46
  4. Step 4: Simplify right side
    511,537.26x = 344,253,664,436.24
  5. Step 5: Solve for x
    x = 344,253,664,436.24/511,537.26
  6. Step 6: Final answer
    x = 672,978.67

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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.