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Finding the Fourth Proportional to 674,504.76, 930,819 and 368,581.12

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Solution

The fourth proportional to 674,504.76, 930,819 and 368,581.12 is: 508,643.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,504.76 : 930,819 = 368,581.12 : x
  2. Step 2: Convert to fraction form
    674,504.76/930,819 = 368,581.12/x
  3. Step 3: Cross multiply
    674,504.76x = 930,819 × 368,581.12
  4. Step 4: Simplify right side
    674,504.76x = 343,082,309,537.28
  5. Step 5: Solve for x
    x = 343,082,309,537.28/674,504.76
  6. Step 6: Final answer
    x = 508,643.27

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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.