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Finding the Fourth Proportional to 631,575.81, 871,572.51 and 345,098.25

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Solution

The fourth proportional to 631,575.81, 871,572.51 and 345,098.25 is: 476,234.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,575.81 : 871,572.51 = 345,098.25 : x
  2. Step 2: Convert to fraction form
    631,575.81/871,572.51 = 345,098.25/x
  3. Step 3: Cross multiply
    631,575.81x = 871,572.51 × 345,098.25
  4. Step 4: Simplify right side
    631,575.81x = 300,778,147,949.11
  5. Step 5: Solve for x
    x = 300,778,147,949.11/631,575.81
  6. Step 6: Final answer
    x = 476,234.43

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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.