Home / 784,156.11-1,083,606.44-640,863.87

Finding the Fourth Proportional to 784,156.11, 1,083,606.44 and 640,863.87

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Solution

The fourth proportional to 784,156.11, 1,083,606.44 and 640,863.87 is: 885,594.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,156.11 : 1,083,606.44 = 640,863.87 : x
  2. Step 2: Convert to fraction form
    784,156.11/1,083,606.44 = 640,863.87/x
  3. Step 3: Cross multiply
    784,156.11x = 1,083,606.44 × 640,863.87
  4. Step 4: Simplify right side
    784,156.11x = 694,444,213,491.00
  5. Step 5: Solve for x
    x = 694,444,213,491.00/784,156.11
  6. Step 6: Final answer
    x = 885,594.34

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Double scale
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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.