Home / 790,786.09-1,091,290.05-428,209.95

Finding the Fourth Proportional to 790,786.09, 1,091,290.05 and 428,209.95

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Solution

The fourth proportional to 790,786.09, 1,091,290.05 and 428,209.95 is: 590,932.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,786.09 : 1,091,290.05 = 428,209.95 : x
  2. Step 2: Convert to fraction form
    790,786.09/1,091,290.05 = 428,209.95/x
  3. Step 3: Cross multiply
    790,786.09x = 1,091,290.05 × 428,209.95
  4. Step 4: Simplify right side
    790,786.09x = 467,301,257,746.00
  5. Step 5: Solve for x
    x = 467,301,257,746.00/790,786.09
  6. Step 6: Final answer
    x = 590,932.57

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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.