Home / 790,217-1,090,499.38-427,640.85

Finding the Fourth Proportional to 790,217, 1,090,499.38 and 427,640.85

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Solution

The fourth proportional to 790,217, 1,090,499.38 and 427,640.85 is: 590,144.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,217 : 1,090,499.38 = 427,640.85 : x
  2. Step 2: Convert to fraction form
    790,217/1,090,499.38 = 427,640.85/x
  3. Step 3: Cross multiply
    790,217x = 1,090,499.38 × 427,640.85
  4. Step 4: Simplify right side
    790,217x = 466,342,081,787.67
  5. Step 5: Solve for x
    x = 466,342,081,787.67/790,217
  6. Step 6: Final answer
    x = 590,144.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.