Home / 785,717.12-1,084,289.44-428,021.12

Finding the Fourth Proportional to 785,717.12, 1,084,289.44 and 428,021.12

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Solution

The fourth proportional to 785,717.12, 1,084,289.44 and 428,021.12 is: 590,669.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,717.12 : 1,084,289.44 = 428,021.12 : x
  2. Step 2: Convert to fraction form
    785,717.12/1,084,289.44 = 428,021.12/x
  3. Step 3: Cross multiply
    785,717.12x = 1,084,289.44 × 428,021.12
  4. Step 4: Simplify right side
    785,717.12x = 464,098,780,512.97
  5. Step 5: Solve for x
    x = 464,098,780,512.97/785,717.12
  6. Step 6: Final answer
    x = 590,669.04

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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.