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Finding the Fourth Proportional to 684,503.94, 944,236.22 and 397,992.36

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Solution

The fourth proportional to 684,503.94, 944,236.22 and 397,992.36 is: 549,008.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,503.94 : 944,236.22 = 397,992.36 : x
  2. Step 2: Convert to fraction form
    684,503.94/944,236.22 = 397,992.36/x
  3. Step 3: Cross multiply
    684,503.94x = 944,236.22 × 397,992.36
  4. Step 4: Simplify right side
    684,503.94x = 375,798,801,595.28
  5. Step 5: Solve for x
    x = 375,798,801,595.28/684,503.94
  6. Step 6: Final answer
    x = 549,008.97

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Double scale
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Similar ratio
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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.