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Finding the Fourth Proportional to 638,172.36, 880,683.96 and 351,702.96

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Solution

The fourth proportional to 638,172.36, 880,683.96 and 351,702.96 is: 485,353.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,172.36 : 880,683.96 = 351,702.96 : x
  2. Step 2: Convert to fraction form
    638,172.36/880,683.96 = 351,702.96/x
  3. Step 3: Cross multiply
    638,172.36x = 880,683.96 × 351,702.96
  4. Step 4: Simplify right side
    638,172.36x = 309,739,155,556.52
  5. Step 5: Solve for x
    x = 309,739,155,556.52/638,172.36
  6. Step 6: Final answer
    x = 485,353.45

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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.