Home / 513,113,021.52-769,591,765.40-139,650,010.01

Finding the Fourth Proportional to 513,113,021.52, 769,591,765.40 and 139,650,010.01

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Solution

The fourth proportional to 513,113,021.52, 769,591,765.40 and 139,650,010.01 is: 209,453,849.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,113,021.52 : 769,591,765.40 = 139,650,010.01 : x
  2. Step 2: Convert to fraction form
    513,113,021.52/769,591,765.40 = 139,650,010.01/x
  3. Step 3: Cross multiply
    513,113,021.52x = 769,591,765.40 × 139,650,010.01
  4. Step 4: Simplify right side
    513,113,021.52x = 107,473,497,739,101,328
  5. Step 5: Solve for x
    x = 107,473,497,739,101,328/513,113,021.52
  6. Step 6: Final answer
    x = 209,453,849.80

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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.