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Finding the Fourth Proportional to 674,489.06, 930,783.66 and 368,558.72

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Solution

The fourth proportional to 674,489.06, 930,783.66 and 368,558.72 is: 508,604.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,489.06 : 930,783.66 = 368,558.72 : x
  2. Step 2: Convert to fraction form
    674,489.06/930,783.66 = 368,558.72/x
  3. Step 3: Cross multiply
    674,489.06x = 930,783.66 × 368,558.72
  4. Step 4: Simplify right side
    674,489.06x = 343,048,434,326.52
  5. Step 5: Solve for x
    x = 343,048,434,326.52/674,489.06
  6. Step 6: Final answer
    x = 508,604.89

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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.