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Finding the Fourth Proportional to 438,454.69, 605,118.53 and 364,736.90

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Solution

The fourth proportional to 438,454.69, 605,118.53 and 364,736.90 is: 503,379.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,454.69 : 605,118.53 = 364,736.90 : x
  2. Step 2: Convert to fraction form
    438,454.69/605,118.53 = 364,736.90/x
  3. Step 3: Cross multiply
    438,454.69x = 605,118.53 × 364,736.90
  4. Step 4: Simplify right side
    438,454.69x = 220,709,056,764.76
  5. Step 5: Solve for x
    x = 220,709,056,764.76/438,454.69
  6. Step 6: Final answer
    x = 503,379.40

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Double scale
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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.