Home / 785,451.70-1,084,562.52-640,280.26

Finding the Fourth Proportional to 785,451.70, 1,084,562.52 and 640,280.26

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Solution

The fourth proportional to 785,451.70, 1,084,562.52 and 640,280.26 is: 884,107.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,451.70 : 1,084,562.52 = 640,280.26 : x
  2. Step 2: Convert to fraction form
    785,451.70/1,084,562.52 = 640,280.26/x
  3. Step 3: Cross multiply
    785,451.70x = 1,084,562.52 × 640,280.26
  4. Step 4: Simplify right side
    785,451.70x = 694,423,972,291.86
  5. Step 5: Solve for x
    x = 694,423,972,291.86/785,451.70
  6. Step 6: Final answer
    x = 884,107.80

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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.