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Finding the Fourth Proportional to 492,683.88, 679,910 and 299,035.56

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Solution

The fourth proportional to 492,683.88, 679,910 and 299,035.56 is: 412,672.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,683.88 : 679,910 = 299,035.56 : x
  2. Step 2: Convert to fraction form
    492,683.88/679,910 = 299,035.56/x
  3. Step 3: Cross multiply
    492,683.88x = 679,910 × 299,035.56
  4. Step 4: Simplify right side
    492,683.88x = 203,317,267,599.60
  5. Step 5: Solve for x
    x = 203,317,267,599.60/492,683.88
  6. Step 6: Final answer
    x = 412,672.86

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1.5x scale

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.