Home / 785,453.31-1,084,564.76-640,281.87

Finding the Fourth Proportional to 785,453.31, 1,084,564.76 and 640,281.87

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Solution

The fourth proportional to 785,453.31, 1,084,564.76 and 640,281.87 is: 884,110.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,453.31 : 1,084,564.76 = 640,281.87 : x
  2. Step 2: Convert to fraction form
    785,453.31/1,084,564.76 = 640,281.87/x
  3. Step 3: Cross multiply
    785,453.31x = 1,084,564.76 × 640,281.87
  4. Step 4: Simplify right side
    785,453.31x = 694,427,149,467.49
  5. Step 5: Solve for x
    x = 694,427,149,467.49/785,453.31
  6. Step 6: Final answer
    x = 884,110.03

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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.