Home / 885,907.40-1,328,861.10-647,961.80

Finding the Fourth Proportional to 885,907.40, 1,328,861.10 and 647,961.80

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Solution

The fourth proportional to 885,907.40, 1,328,861.10 and 647,961.80 is: 971,942.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,907.40 : 1,328,861.10 = 647,961.80 : x
  2. Step 2: Convert to fraction form
    885,907.40/1,328,861.10 = 647,961.80/x
  3. Step 3: Cross multiply
    885,907.40x = 1,328,861.10 × 647,961.80
  4. Step 4: Simplify right side
    885,907.40x = 861,051,230,305.98
  5. Step 5: Solve for x
    x = 861,051,230,305.98/885,907.40
  6. Step 6: Final answer
    x = 971,942.70

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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.