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Finding the Fourth Proportional to 492,558.48, 680,178.60 and 371,492.64

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Solution

The fourth proportional to 492,558.48, 680,178.60 and 371,492.64 is: 512,997.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,558.48 : 680,178.60 = 371,492.64 : x
  2. Step 2: Convert to fraction form
    492,558.48/680,178.60 = 371,492.64/x
  3. Step 3: Cross multiply
    492,558.48x = 680,178.60 × 371,492.64
  4. Step 4: Simplify right side
    492,558.48x = 252,681,343,785.50
  5. Step 5: Solve for x
    x = 252,681,343,785.50/492,558.48
  6. Step 6: Final answer
    x = 512,997.65

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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.