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Finding the Fourth Proportional to 631,585.36, 871,562.10 and 345,115.36

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Solution

The fourth proportional to 631,585.36, 871,562.10 and 345,115.36 is: 476,245.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,585.36 : 871,562.10 = 345,115.36 : x
  2. Step 2: Convert to fraction form
    631,585.36/871,562.10 = 345,115.36/x
  3. Step 3: Cross multiply
    631,585.36x = 871,562.10 × 345,115.36
  4. Step 4: Simplify right side
    631,585.36x = 300,789,467,903.86
  5. Step 5: Solve for x
    x = 300,789,467,903.86/631,585.36
  6. Step 6: Final answer
    x = 476,245.16

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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.