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Finding the Fourth Proportional to 485,712.49, 670,467.87 and 365,203.72

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Solution

The fourth proportional to 485,712.49, 670,467.87 and 365,203.72 is: 504,119.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,712.49 : 670,467.87 = 365,203.72 : x
  2. Step 2: Convert to fraction form
    485,712.49/670,467.87 = 365,203.72/x
  3. Step 3: Cross multiply
    485,712.49x = 670,467.87 × 365,203.72
  4. Step 4: Simplify right side
    485,712.49x = 244,857,360,264.48
  5. Step 5: Solve for x
    x = 244,857,360,264.48/485,712.49
  6. Step 6: Final answer
    x = 504,119.96

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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.