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Finding the Fourth Proportional to 438,478.70, 605,151.66 and 364,760.90

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Solution

The fourth proportional to 438,478.70, 605,151.66 and 364,760.90 is: 503,412.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,478.70 : 605,151.66 = 364,760.90 : x
  2. Step 2: Convert to fraction form
    438,478.70/605,151.66 = 364,760.90/x
  3. Step 3: Cross multiply
    438,478.70x = 605,151.66 × 364,760.90
  4. Step 4: Simplify right side
    438,478.70x = 220,735,664,138.09
  5. Step 5: Solve for x
    x = 220,735,664,138.09/438,478.70
  6. Step 6: Final answer
    x = 503,412.51

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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.