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Finding the Fourth Proportional to 665,224.98, 917,738.46 and 491,212.14

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Solution

The fourth proportional to 665,224.98, 917,738.46 and 491,212.14 is: 677,671.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,224.98 : 917,738.46 = 491,212.14 : x
  2. Step 2: Convert to fraction form
    665,224.98/917,738.46 = 491,212.14/x
  3. Step 3: Cross multiply
    665,224.98x = 917,738.46 × 491,212.14
  4. Step 4: Simplify right side
    665,224.98x = 450,804,272,896.90
  5. Step 5: Solve for x
    x = 450,804,272,896.90/665,224.98
  6. Step 6: Final answer
    x = 677,671.90

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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.