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Finding the Fourth Proportional to 539,123.26, 743,990.10 and 297,406.42

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Solution

The fourth proportional to 539,123.26, 743,990.10 and 297,406.42 is: 410,420.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,123.26 : 743,990.10 = 297,406.42 : x
  2. Step 2: Convert to fraction form
    539,123.26/743,990.10 = 297,406.42/x
  3. Step 3: Cross multiply
    539,123.26x = 743,990.10 × 297,406.42
  4. Step 4: Simplify right side
    539,123.26x = 221,267,432,156.44
  5. Step 5: Solve for x
    x = 221,267,432,156.44/539,123.26
  6. Step 6: Final answer
    x = 410,420.86

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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.