Home / 790,786.88-1,091,291.08-428,210.78

Finding the Fourth Proportional to 790,786.88, 1,091,291.08 and 428,210.78

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Solution

The fourth proportional to 790,786.88, 1,091,291.08 and 428,210.78 is: 590,933.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,786.88 : 1,091,291.08 = 428,210.78 : x
  2. Step 2: Convert to fraction form
    790,786.88/1,091,291.08 = 428,210.78/x
  3. Step 3: Cross multiply
    790,786.88x = 1,091,291.08 × 428,210.78
  4. Step 4: Simplify right side
    790,786.88x = 467,302,604,573.84
  5. Step 5: Solve for x
    x = 467,302,604,573.84/790,786.88
  6. Step 6: Final answer
    x = 590,933.68

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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.