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Finding the Fourth Proportional to 631,272.63, 871,120.94 and 359,406.93

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Solution

The fourth proportional to 631,272.63, 871,120.94 and 359,406.93 is: 495,961.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,272.63 : 871,120.94 = 359,406.93 : x
  2. Step 2: Convert to fraction form
    631,272.63/871,120.94 = 359,406.93/x
  3. Step 3: Cross multiply
    631,272.63x = 871,120.94 × 359,406.93
  4. Step 4: Simplify right side
    631,272.63x = 313,086,900,907.08
  5. Step 5: Solve for x
    x = 313,086,900,907.08/631,272.63
  6. Step 6: Final answer
    x = 495,961.47

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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.