Home / 790,856.34-1,091,382.78-428,280.78

Finding the Fourth Proportional to 790,856.34, 1,091,382.78 and 428,280.78

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Solution

The fourth proportional to 790,856.34, 1,091,382.78 and 428,280.78 is: 591,028.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,856.34 : 1,091,382.78 = 428,280.78 : x
  2. Step 2: Convert to fraction form
    790,856.34/1,091,382.78 = 428,280.78/x
  3. Step 3: Cross multiply
    790,856.34x = 1,091,382.78 × 428,280.78
  4. Step 4: Simplify right side
    790,856.34x = 467,418,268,296.97
  5. Step 5: Solve for x
    x = 467,418,268,296.97/790,856.34
  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.