Home / 790,421.31-1,185,820.62-257,943.33

Finding the Fourth Proportional to 790,421.31, 1,185,820.62 and 257,943.33

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Solution

The fourth proportional to 790,421.31, 1,185,820.62 and 257,943.33 is: 386,976.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,421.31 : 1,185,820.62 = 257,943.33 : x
  2. Step 2: Convert to fraction form
    790,421.31/1,185,820.62 = 257,943.33/x
  3. Step 3: Cross multiply
    790,421.31x = 1,185,820.62 × 257,943.33
  4. Step 4: Simplify right side
    790,421.31x = 305,874,519,505.47
  5. Step 5: Solve for x
    x = 305,874,519,505.47/790,421.31
  6. Step 6: Final answer
    x = 386,976.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.