Home / 767,689.26-1,059,412.59-428,179.38

Finding the Fourth Proportional to 767,689.26, 1,059,412.59 and 428,179.38

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Solution

The fourth proportional to 767,689.26, 1,059,412.59 and 428,179.38 is: 590,888.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,689.26 : 1,059,412.59 = 428,179.38 : x
  2. Step 2: Convert to fraction form
    767,689.26/1,059,412.59 = 428,179.38/x
  3. Step 3: Cross multiply
    767,689.26x = 1,059,412.59 × 428,179.38
  4. Step 4: Simplify right side
    767,689.26x = 453,618,625,950.39
  5. Step 5: Solve for x
    x = 453,618,625,950.39/767,689.26
  6. Step 6: Final answer
    x = 590,888.33

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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.