Home / 809,319.70-1,116,861.40-446,743.78

Finding the Fourth Proportional to 809,319.70, 1,116,861.40 and 446,743.78

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Solution

The fourth proportional to 809,319.70, 1,116,861.40 and 446,743.78 is: 616,506.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,319.70 : 1,116,861.40 = 446,743.78 : x
  2. Step 2: Convert to fraction form
    809,319.70/1,116,861.40 = 446,743.78/x
  3. Step 3: Cross multiply
    809,319.70x = 1,116,861.40 × 446,743.78
  4. Step 4: Simplify right side
    809,319.70x = 498,950,883,572.09
  5. Step 5: Solve for x
    x = 498,950,883,572.09/809,319.70
  6. Step 6: Final answer
    x = 616,506.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.