Home / 790,778.80-1,091,275.32-428,205.52

Finding the Fourth Proportional to 790,778.80, 1,091,275.32 and 428,205.52

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Solution

The fourth proportional to 790,778.80, 1,091,275.32 and 428,205.52 is: 590,923.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,778.80 : 1,091,275.32 = 428,205.52 : x
  2. Step 2: Convert to fraction form
    790,778.80/1,091,275.32 = 428,205.52/x
  3. Step 3: Cross multiply
    790,778.80x = 1,091,275.32 × 428,205.52
  4. Step 4: Simplify right side
    790,778.80x = 467,290,115,863.77
  5. Step 5: Solve for x
    x = 467,290,115,863.77/790,778.80
  6. Step 6: Final answer
    x = 590,923.93

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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.