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Finding the Fourth Proportional to 885,800.77, 1,328,911.88 and 286,761.88

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Solution

The fourth proportional to 885,800.77, 1,328,911.88 and 286,761.88 is: 430,211.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,800.77 : 1,328,911.88 = 286,761.88 : x
  2. Step 2: Convert to fraction form
    885,800.77/1,328,911.88 = 286,761.88/x
  3. Step 3: Cross multiply
    885,800.77x = 1,328,911.88 × 286,761.88
  4. Step 4: Simplify right side
    885,800.77x = 381,081,269,063.13
  5. Step 5: Solve for x
    x = 381,081,269,063.13/885,800.77
  6. Step 6: Final answer
    x = 430,211.04

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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.