Home / 638,618,338.80-956,135,917.80-620,702,434.80

Finding the Fourth Proportional to 638,618,338.80, 956,135,917.80 and 620,702,434.80

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Solution

The fourth proportional to 638,618,338.80, 956,135,917.80 and 620,702,434.80 is: 929,312,323.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,618,338.80 : 956,135,917.80 = 620,702,434.80 : x
  2. Step 2: Convert to fraction form
    638,618,338.80/956,135,917.80 = 620,702,434.80/x
  3. Step 3: Cross multiply
    638,618,338.80x = 956,135,917.80 × 620,702,434.80
  4. Step 4: Simplify right side
    638,618,338.80x = 593,475,892,178,192,640
  5. Step 5: Solve for x
    x = 593,475,892,178,192,640/638,618,338.80
  6. Step 6: Final answer
    x = 929,312,323.37

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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.