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Finding the Fourth Proportional to 885,806.60, 1,328,709.90 and 294,830.60

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Solution

The fourth proportional to 885,806.60, 1,328,709.90 and 294,830.60 is: 442,245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,806.60 : 1,328,709.90 = 294,830.60 : x
  2. Step 2: Convert to fraction form
    885,806.60/1,328,709.90 = 294,830.60/x
  3. Step 3: Cross multiply
    885,806.60x = 1,328,709.90 × 294,830.60
  4. Step 4: Simplify right side
    885,806.60x = 391,744,337,042.94
  5. Step 5: Solve for x
    x = 391,744,337,042.94/885,806.60
  6. Step 6: Final answer
    x = 442,245.90

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Similar ratio
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1.5x scale

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.