Home / 785,932.80-1,084,587.28-428,236.80

Finding the Fourth Proportional to 785,932.80, 1,084,587.28 and 428,236.80

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Solution

The fourth proportional to 785,932.80, 1,084,587.28 and 428,236.80 is: 590,966.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,932.80 : 1,084,587.28 = 428,236.80 : x
  2. Step 2: Convert to fraction form
    785,932.80/1,084,587.28 = 428,236.80/x
  3. Step 3: Cross multiply
    785,932.80x = 1,084,587.28 × 428,236.80
  4. Step 4: Simplify right side
    785,932.80x = 464,460,186,107.90
  5. Step 5: Solve for x
    x = 464,460,186,107.90/785,932.80
  6. Step 6: Final answer
    x = 590,966.79

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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.