Home / 631,359.40-871,296.90-344,906.20

Finding the Fourth Proportional to 631,359.40, 871,296.90 and 344,906.20

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Solution

The fourth proportional to 631,359.40, 871,296.90 and 344,906.20 is: 475,981.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,359.40 : 871,296.90 = 344,906.20 : x
  2. Step 2: Convert to fraction form
    631,359.40/871,296.90 = 344,906.20/x
  3. Step 3: Cross multiply
    631,359.40x = 871,296.90 × 344,906.20
  4. Step 4: Simplify right side
    631,359.40x = 300,515,702,850.78
  5. Step 5: Solve for x
    x = 300,515,702,850.78/631,359.40
  6. Step 6: Final answer
    x = 475,981.99

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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.