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Finding the Fourth Proportional to 631,253.49, 871,129.82 and 344,774.25

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Solution

The fourth proportional to 631,253.49, 871,129.82 and 344,774.25 is: 475,788.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,253.49 : 871,129.82 = 344,774.25 : x
  2. Step 2: Convert to fraction form
    631,253.49/871,129.82 = 344,774.25/x
  3. Step 3: Cross multiply
    631,253.49x = 871,129.82 × 344,774.25
  4. Step 4: Simplify right side
    631,253.49x = 300,343,128,619.26
  5. Step 5: Solve for x
    x = 300,343,128,619.26/631,253.49
  6. Step 6: Final answer
    x = 475,788.46

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Double scale
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Similar ratio
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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.