Home / 389,627.20-584,440.80-337,139.20

Finding the Fourth Proportional to 389,627.20, 584,440.80 and 337,139.20

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Solution

The fourth proportional to 389,627.20, 584,440.80 and 337,139.20 is: 505,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,627.20 : 584,440.80 = 337,139.20 : x
  2. Step 2: Convert to fraction form
    389,627.20/584,440.80 = 337,139.20/x
  3. Step 3: Cross multiply
    389,627.20x = 584,440.80 × 337,139.20
  4. Step 4: Simplify right side
    389,627.20x = 197,037,903,759.36
  5. Step 5: Solve for x
    x = 197,037,903,759.36/389,627.20
  6. Step 6: Final answer
    x = 505,708.80

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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.