Home / 790,856.33-1,091,382.78-428,280.77

Finding the Fourth Proportional to 790,856.33, 1,091,382.78 and 428,280.77

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Solution

The fourth proportional to 790,856.33, 1,091,382.78 and 428,280.77 is: 591,028.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,856.33 : 1,091,382.78 = 428,280.77 : x
  2. Step 2: Convert to fraction form
    790,856.33/1,091,382.78 = 428,280.77/x
  3. Step 3: Cross multiply
    790,856.33x = 1,091,382.78 × 428,280.77
  4. Step 4: Simplify right side
    790,856.33x = 467,418,257,383.14
  5. Step 5: Solve for x
    x = 467,418,257,383.14/790,856.33
  6. Step 6: Final answer
    x = 591,028.03

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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.