Home / 785,934.32-1,084,589.37-428,238.32

Finding the Fourth Proportional to 785,934.32, 1,084,589.37 and 428,238.32

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Solution

The fourth proportional to 785,934.32, 1,084,589.37 and 428,238.32 is: 590,968.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,934.32 : 1,084,589.37 = 428,238.32 : x
  2. Step 2: Convert to fraction form
    785,934.32/1,084,589.37 = 428,238.32/x
  3. Step 3: Cross multiply
    785,934.32x = 1,084,589.37 × 428,238.32
  4. Step 4: Simplify right side
    785,934.32x = 464,462,729,698.66
  5. Step 5: Solve for x
    x = 464,462,729,698.66/785,934.32
  6. Step 6: Final answer
    x = 590,968.89

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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.