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Finding the Fourth Proportional to 439,347.33, 659,024.51 and 287,672.27

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Solution

The fourth proportional to 439,347.33, 659,024.51 and 287,672.27 is: 431,510.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,347.33 : 659,024.51 = 287,672.27 : x
  2. Step 2: Convert to fraction form
    439,347.33/659,024.51 = 287,672.27/x
  3. Step 3: Cross multiply
    439,347.33x = 659,024.51 × 287,672.27
  4. Step 4: Simplify right side
    439,347.33x = 189,583,072,043.85
  5. Step 5: Solve for x
    x = 189,583,072,043.85/439,347.33
  6. Step 6: Final answer
    x = 431,510.70

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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.