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Finding the Fourth Proportional to 512,709,745.19, 769,064,626.89 and 124,529,959.58

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Solution

The fourth proportional to 512,709,745.19, 769,064,626.89 and 124,529,959.58 is: 186,794,941.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,709,745.19 : 769,064,626.89 = 124,529,959.58 : x
  2. Step 2: Convert to fraction form
    512,709,745.19/769,064,626.89 = 124,529,959.58/x
  3. Step 3: Cross multiply
    512,709,745.19x = 769,064,626.89 × 124,529,959.58
  4. Step 4: Simplify right side
    512,709,745.19x = 95,771,586,897,174,160
  5. Step 5: Solve for x
    x = 95,771,586,897,174,160/512,709,745.19
  6. Step 6: Final answer
    x = 186,794,941.58

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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.