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Finding the Fourth Proportional to 720,562.73, 994,380.53 and 393,876.23

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Solution

The fourth proportional to 720,562.73, 994,380.53 and 393,876.23 is: 543,551.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,562.73 : 994,380.53 = 393,876.23 : x
  2. Step 2: Convert to fraction form
    720,562.73/994,380.53 = 393,876.23/x
  3. Step 3: Cross multiply
    720,562.73x = 994,380.53 × 393,876.23
  4. Step 4: Simplify right side
    720,562.73x = 391,662,847,400.52
  5. Step 5: Solve for x
    x = 391,662,847,400.52/720,562.73
  6. Step 6: Final answer
    x = 543,551.36

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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.