Home / 919,009.80-1,378,514.70-469,581.30

Finding the Fourth Proportional to 919,009.80, 1,378,514.70 and 469,581.30

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Solution

The fourth proportional to 919,009.80, 1,378,514.70 and 469,581.30 is: 704,371.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,009.80 : 1,378,514.70 = 469,581.30 : x
  2. Step 2: Convert to fraction form
    919,009.80/1,378,514.70 = 469,581.30/x
  3. Step 3: Cross multiply
    919,009.80x = 1,378,514.70 × 469,581.30
  4. Step 4: Simplify right side
    919,009.80x = 647,324,724,895.11
  5. Step 5: Solve for x
    x = 647,324,724,895.11/919,009.80
  6. Step 6: Final answer
    x = 704,371.95

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Double scale
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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.