Home / 631,917.72-872,065.44-345,453.12

Finding the Fourth Proportional to 631,917.72, 872,065.44 and 345,453.12

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Solution

The fourth proportional to 631,917.72, 872,065.44 and 345,453.12 is: 476,735.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,917.72 : 872,065.44 = 345,453.12 : x
  2. Step 2: Convert to fraction form
    631,917.72/872,065.44 = 345,453.12/x
  3. Step 3: Cross multiply
    631,917.72x = 872,065.44 × 345,453.12
  4. Step 4: Simplify right side
    631,917.72x = 301,257,727,092.17
  5. Step 5: Solve for x
    x = 301,257,727,092.17/631,917.72
  6. Step 6: Final answer
    x = 476,735.68

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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.