Home / 790,790.72-1,091,293.44-428,218.88

Finding the Fourth Proportional to 790,790.72, 1,091,293.44 and 428,218.88

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Solution

The fourth proportional to 790,790.72, 1,091,293.44 and 428,218.88 is: 590,943.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,790.72 : 1,091,293.44 = 428,218.88 : x
  2. Step 2: Convert to fraction form
    790,790.72/1,091,293.44 = 428,218.88/x
  3. Step 3: Cross multiply
    790,790.72x = 1,091,293.44 × 428,218.88
  4. Step 4: Simplify right side
    790,790.72x = 467,312,454,628.15
  5. Step 5: Solve for x
    x = 467,312,454,628.15/790,790.72
  6. Step 6: Final answer
    x = 590,943.27

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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.