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Finding the Fourth Proportional to 545,825.40, 818,738.10 and 397,109.40

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Solution

The fourth proportional to 545,825.40, 818,738.10 and 397,109.40 is: 595,664.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,825.40 : 818,738.10 = 397,109.40 : x
  2. Step 2: Convert to fraction form
    545,825.40/818,738.10 = 397,109.40/x
  3. Step 3: Cross multiply
    545,825.40x = 818,738.10 × 397,109.40
  4. Step 4: Simplify right side
    545,825.40x = 325,128,595,648.14
  5. Step 5: Solve for x
    x = 325,128,595,648.14/545,825.40
  6. Step 6: Final answer
    x = 595,664.10

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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.