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Finding the Fourth Proportional to 613,469.12, 846,390.48 and 371,674.40

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Solution

The fourth proportional to 613,469.12, 846,390.48 and 371,674.40 is: 512,791.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,469.12 : 846,390.48 = 371,674.40 : x
  2. Step 2: Convert to fraction form
    613,469.12/846,390.48 = 371,674.40/x
  3. Step 3: Cross multiply
    613,469.12x = 846,390.48 × 371,674.40
  4. Step 4: Simplify right side
    613,469.12x = 314,581,673,819.71
  5. Step 5: Solve for x
    x = 314,581,673,819.71/613,469.12
  6. Step 6: Final answer
    x = 512,791.38

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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.