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Finding the Fourth Proportional to 439,348.83, 659,026.76 and 287,673.77

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Solution

The fourth proportional to 439,348.83, 659,026.76 and 287,673.77 is: 431,512.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,348.83 : 659,026.76 = 287,673.77 : x
  2. Step 2: Convert to fraction form
    439,348.83/659,026.76 = 287,673.77/x
  3. Step 3: Cross multiply
    439,348.83x = 659,026.76 × 287,673.77
  4. Step 4: Simplify right side
    439,348.83x = 189,584,707,846.58
  5. Step 5: Solve for x
    x = 189,584,707,846.58/439,348.83
  6. Step 6: Final answer
    x = 431,512.95

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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.