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Finding the Fourth Proportional to 492,467.02, 679,184.12 and 339,748.80

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Solution

The fourth proportional to 492,467.02, 679,184.12 and 339,748.80 is: 468,563.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,467.02 : 679,184.12 = 339,748.80 : x
  2. Step 2: Convert to fraction form
    492,467.02/679,184.12 = 339,748.80/x
  3. Step 3: Cross multiply
    492,467.02x = 679,184.12 × 339,748.80
  4. Step 4: Simplify right side
    492,467.02x = 230,751,989,749.06
  5. Step 5: Solve for x
    x = 230,751,989,749.06/492,467.02
  6. Step 6: Final answer
    x = 468,563.34

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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.