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Finding the Fourth Proportional to 631,223.48, 871,093.98 and 359,308.88

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Solution

The fourth proportional to 631,223.48, 871,093.98 and 359,308.88 is: 495,849.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,223.48 : 871,093.98 = 359,308.88 : x
  2. Step 2: Convert to fraction form
    631,223.48/871,093.98 = 359,308.88/x
  3. Step 3: Cross multiply
    631,223.48x = 871,093.98 × 359,308.88
  4. Step 4: Simplify right side
    631,223.48x = 312,991,802,328.54
  5. Step 5: Solve for x
    x = 312,991,802,328.54/631,223.48
  6. Step 6: Final answer
    x = 495,849.43

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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.