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Finding the Fourth Proportional to 631,613.07, 871,647.51 and 345,151.56

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Solution

The fourth proportional to 631,613.07, 871,647.51 and 345,151.56 is: 476,320.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,613.07 : 871,647.51 = 345,151.56 : x
  2. Step 2: Convert to fraction form
    631,613.07/871,647.51 = 345,151.56/x
  3. Step 3: Cross multiply
    631,613.07x = 871,647.51 × 345,151.56
  4. Step 4: Simplify right side
    631,613.07x = 300,850,497,846.62
  5. Step 5: Solve for x
    x = 300,850,497,846.62/631,613.07
  6. Step 6: Final answer
    x = 476,320.89

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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.