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Finding the Fourth Proportional to 438,453.69, 605,117.15 and 364,735.90

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Solution

The fourth proportional to 438,453.69, 605,117.15 and 364,735.90 is: 503,378.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,453.69 : 605,117.15 = 364,735.90 : x
  2. Step 2: Convert to fraction form
    438,453.69/605,117.15 = 364,735.90/x
  3. Step 3: Cross multiply
    438,453.69x = 605,117.15 × 364,735.90
  4. Step 4: Simplify right side
    438,453.69x = 220,707,948,310.69
  5. Step 5: Solve for x
    x = 220,707,948,310.69/438,453.69
  6. Step 6: Final answer
    x = 503,378.02

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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.