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Finding the Fourth Proportional to 438,473.70, 605,144.76 and 364,755.90

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Solution

The fourth proportional to 438,473.70, 605,144.76 and 364,755.90 is: 503,405.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,473.70 : 605,144.76 = 364,755.90 : x
  2. Step 2: Convert to fraction form
    438,473.70/605,144.76 = 364,755.90/x
  3. Step 3: Cross multiply
    438,473.70x = 605,144.76 × 364,755.90
  4. Step 4: Simplify right side
    438,473.70x = 220,730,121,564.08
  5. Step 5: Solve for x
    x = 220,730,121,564.08/438,473.70
  6. Step 6: Final answer
    x = 503,405.61

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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.