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Finding the Fourth Proportional to 790,578.44, 1,090,990.44 and 427,992.72

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Solution

The fourth proportional to 790,578.44, 1,090,990.44 and 427,992.72 is: 590,625.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,578.44 : 1,090,990.44 = 427,992.72 : x
  2. Step 2: Convert to fraction form
    790,578.44/1,090,990.44 = 427,992.72/x
  3. Step 3: Cross multiply
    790,578.44x = 1,090,990.44 × 427,992.72
  4. Step 4: Simplify right side
    790,578.44x = 466,935,965,909.60
  5. Step 5: Solve for x
    x = 466,935,965,909.60/790,578.44
  6. Step 6: Final answer
    x = 590,625.73

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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.