Home / 513,113,021.27-769,591,765.02-139,650,009.76

Finding the Fourth Proportional to 513,113,021.27, 769,591,765.02 and 139,650,009.76

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Solution

The fourth proportional to 513,113,021.27, 769,591,765.02 and 139,650,009.76 is: 209,453,849.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,113,021.27 : 769,591,765.02 = 139,650,009.76 : x
  2. Step 2: Convert to fraction form
    513,113,021.27/769,591,765.02 = 139,650,009.76/x
  3. Step 3: Cross multiply
    513,113,021.27x = 769,591,765.02 × 139,650,009.76
  4. Step 4: Simplify right side
    513,113,021.27x = 107,473,497,494,334,640
  5. Step 5: Solve for x
    x = 107,473,497,494,334,640/513,113,021.27
  6. Step 6: Final answer
    x = 209,453,849.43

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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.