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Finding the Fourth Proportional to 631,275.38, 871,124.73 and 359,409.68

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Solution

The fourth proportional to 631,275.38, 871,124.73 and 359,409.68 is: 495,965.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,275.38 : 871,124.73 = 359,409.68 : x
  2. Step 2: Convert to fraction form
    631,275.38/871,124.73 = 359,409.68/x
  3. Step 3: Cross multiply
    631,275.38x = 871,124.73 × 359,409.68
  4. Step 4: Simplify right side
    631,275.38x = 313,090,660,449.39
  5. Step 5: Solve for x
    x = 313,090,660,449.39/631,275.38
  6. Step 6: Final answer
    x = 495,965.26

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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.