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Finding the Fourth Proportional to 674,346.89, 930,663.09 and 368,469.79

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Solution

The fourth proportional to 674,346.89, 930,663.09 and 368,469.79 is: 508,523.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,346.89 : 930,663.09 = 368,469.79 : x
  2. Step 2: Convert to fraction form
    674,346.89/930,663.09 = 368,469.79/x
  3. Step 3: Cross multiply
    674,346.89x = 930,663.09 × 368,469.79
  4. Step 4: Simplify right side
    674,346.89x = 342,921,231,006.39
  5. Step 5: Solve for x
    x = 342,921,231,006.39/674,346.89
  6. Step 6: Final answer
    x = 508,523.48

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Double scale
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1.5x scale

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.