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Finding the Fourth Proportional to 620,916.72, 931,380.84 and 247,035.12

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Solution

The fourth proportional to 620,916.72, 931,380.84 and 247,035.12 is: 370,554.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,916.72 : 931,380.84 = 247,035.12 : x
  2. Step 2: Convert to fraction form
    620,916.72/931,380.84 = 247,035.12/x
  3. Step 3: Cross multiply
    620,916.72x = 931,380.84 × 247,035.12
  4. Step 4: Simplify right side
    620,916.72x = 230,083,777,575.10
  5. Step 5: Solve for x
    x = 230,083,777,575.10/620,916.72
  6. Step 6: Final answer
    x = 370,554.97

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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.