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Finding the Fourth Proportional to 446,876.10, 670,314.15 and 287,443.80

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Solution

The fourth proportional to 446,876.10, 670,314.15 and 287,443.80 is: 431,165.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,876.10 : 670,314.15 = 287,443.80 : x
  2. Step 2: Convert to fraction form
    446,876.10/670,314.15 = 287,443.80/x
  3. Step 3: Cross multiply
    446,876.10x = 670,314.15 × 287,443.80
  4. Step 4: Simplify right side
    446,876.10x = 192,677,646,469.77
  5. Step 5: Solve for x
    x = 192,677,646,469.77/446,876.10
  6. Step 6: Final answer
    x = 431,165.70

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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.