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Finding the Fourth Proportional to 422,541.88, 634,445.98 and 365,790.85

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Solution

The fourth proportional to 422,541.88, 634,445.98 and 365,790.85 is: 549,234.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,541.88 : 634,445.98 = 365,790.85 : x
  2. Step 2: Convert to fraction form
    422,541.88/634,445.98 = 365,790.85/x
  3. Step 3: Cross multiply
    422,541.88x = 634,445.98 × 365,790.85
  4. Step 4: Simplify right side
    422,541.88x = 232,074,531,131.05
  5. Step 5: Solve for x
    x = 232,074,531,131.05/422,541.88
  6. Step 6: Final answer
    x = 549,234.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.