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Finding the Fourth Proportional to 437,281.60, 655,922.40 and 394,427.20

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Solution

The fourth proportional to 437,281.60, 655,922.40 and 394,427.20 is: 591,640.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,281.60 : 655,922.40 = 394,427.20 : x
  2. Step 2: Convert to fraction form
    437,281.60/655,922.40 = 394,427.20/x
  3. Step 3: Cross multiply
    437,281.60x = 655,922.40 × 394,427.20
  4. Step 4: Simplify right side
    437,281.60x = 258,713,635,649.28
  5. Step 5: Solve for x
    x = 258,713,635,649.28/437,281.60
  6. Step 6: Final answer
    x = 591,640.80

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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.