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Finding the Fourth Proportional to 631,544.82, 871,521.68 and 345,058.75

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Solution

The fourth proportional to 631,544.82, 871,521.68 and 345,058.75 is: 476,175.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,544.82 : 871,521.68 = 345,058.75 : x
  2. Step 2: Convert to fraction form
    631,544.82/871,521.68 = 345,058.75/x
  3. Step 3: Cross multiply
    631,544.82x = 871,521.68 × 345,058.75
  4. Step 4: Simplify right side
    631,544.82x = 300,726,181,509.79
  5. Step 5: Solve for x
    x = 300,726,181,509.79/631,544.82
  6. Step 6: Final answer
    x = 476,175.52

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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.