Home / 435,512,959.20-653,274,752.40-128,811,270.60

Finding the Fourth Proportional to 435,512,959.20, 653,274,752.40 and 128,811,270.60

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Solution

The fourth proportional to 435,512,959.20, 653,274,752.40 and 128,811,270.60 is: 193,218,477.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,512,959.20 : 653,274,752.40 = 128,811,270.60 : x
  2. Step 2: Convert to fraction form
    435,512,959.20/653,274,752.40 = 128,811,270.60/x
  3. Step 3: Cross multiply
    435,512,959.20x = 653,274,752.40 × 128,811,270.60
  4. Step 4: Simplify right side
    435,512,959.20x = 84,149,150,907,544,400
  5. Step 5: Solve for x
    x = 84,149,150,907,544,400/435,512,959.20
  6. Step 6: Final answer
    x = 193,218,477.50

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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.