Home / 518,009,806.60-776,996,738.70-129,836,033.80

Finding the Fourth Proportional to 518,009,806.60, 776,996,738.70 and 129,836,033.80

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Solution

The fourth proportional to 518,009,806.60, 776,996,738.70 and 129,836,033.80 is: 194,749,546.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,009,806.60 : 776,996,738.70 = 129,836,033.80 : x
  2. Step 2: Convert to fraction form
    518,009,806.60/776,996,738.70 = 129,836,033.80/x
  3. Step 3: Cross multiply
    518,009,806.60x = 776,996,738.70 × 129,836,033.80
  4. Step 4: Simplify right side
    518,009,806.60x = 100,882,174,828,342,976
  5. Step 5: Solve for x
    x = 100,882,174,828,342,976/518,009,806.60
  6. Step 6: Final answer
    x = 194,749,546.33

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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.