Home / 674,719.20-1,011,916.80-389,793.60

Finding the Fourth Proportional to 674,719.20, 1,011,916.80 and 389,793.60

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Solution

The fourth proportional to 674,719.20, 1,011,916.80 and 389,793.60 is: 584,596.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,719.20 : 1,011,916.80 = 389,793.60 : x
  2. Step 2: Convert to fraction form
    674,719.20/1,011,916.80 = 389,793.60/x
  3. Step 3: Cross multiply
    674,719.20x = 1,011,916.80 × 389,793.60
  4. Step 4: Simplify right side
    674,719.20x = 394,438,692,372.48
  5. Step 5: Solve for x
    x = 394,438,692,372.48/674,719.20
  6. Step 6: Final answer
    x = 584,596.81

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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.