Home / 638,618,339.80-956,135,919.30-620,702,435.80

Finding the Fourth Proportional to 638,618,339.80, 956,135,919.30 and 620,702,435.80

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Solution

The fourth proportional to 638,618,339.80, 956,135,919.30 and 620,702,435.80 is: 929,312,324.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,618,339.80 : 956,135,919.30 = 620,702,435.80 : x
  2. Step 2: Convert to fraction form
    638,618,339.80/956,135,919.30 = 620,702,435.80/x
  3. Step 3: Cross multiply
    638,618,339.80x = 956,135,919.30 × 620,702,435.80
  4. Step 4: Simplify right side
    638,618,339.80x = 593,475,894,065,382,144
  5. Step 5: Solve for x
    x = 593,475,894,065,382,144/638,618,339.80
  6. Step 6: Final answer
    x = 929,312,324.87

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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.