Home / 790,221.75-1,090,505.93-427,645.60

Finding the Fourth Proportional to 790,221.75, 1,090,505.93 and 427,645.60

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Solution

The fourth proportional to 790,221.75, 1,090,505.93 and 427,645.60 is: 590,150.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,221.75 : 1,090,505.93 = 427,645.60 : x
  2. Step 2: Convert to fraction form
    790,221.75/1,090,505.93 = 427,645.60/x
  3. Step 3: Cross multiply
    790,221.75x = 1,090,505.93 × 427,645.60
  4. Step 4: Simplify right side
    790,221.75x = 466,350,062,738.41
  5. Step 5: Solve for x
    x = 466,350,062,738.41/790,221.75
  6. Step 6: Final answer
    x = 590,150.88

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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.