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Finding the Fourth Proportional to 573,403.20, 791,406.09 and 379,813.20

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Solution

The fourth proportional to 573,403.20, 791,406.09 and 379,813.20 is: 524,214.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,403.20 : 791,406.09 = 379,813.20 : x
  2. Step 2: Convert to fraction form
    573,403.20/791,406.09 = 379,813.20/x
  3. Step 3: Cross multiply
    573,403.20x = 791,406.09 × 379,813.20
  4. Step 4: Simplify right side
    573,403.20x = 300,586,479,542.39
  5. Step 5: Solve for x
    x = 300,586,479,542.39/573,403.20
  6. Step 6: Final answer
    x = 524,214.86

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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.