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Finding the Fourth Proportional to 518,736.55, 715,861.89 and 292,382.05

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Solution

The fourth proportional to 518,736.55, 715,861.89 and 292,382.05 is: 403,490.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,736.55 : 715,861.89 = 292,382.05 : x
  2. Step 2: Convert to fraction form
    518,736.55/715,861.89 = 292,382.05/x
  3. Step 3: Cross multiply
    518,736.55x = 715,861.89 × 292,382.05
  4. Step 4: Simplify right side
    518,736.55x = 209,305,166,915.08
  5. Step 5: Solve for x
    x = 209,305,166,915.08/518,736.55
  6. Step 6: Final answer
    x = 403,490.30

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.