Home / 631,128.39-871,012.08-359,137.95

Finding the Fourth Proportional to 631,128.39, 871,012.08 and 359,137.95

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Solution

The fourth proportional to 631,128.39, 871,012.08 and 359,137.95 is: 495,641.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,128.39 : 871,012.08 = 359,137.95 : x
  2. Step 2: Convert to fraction form
    631,128.39/871,012.08 = 359,137.95/x
  3. Step 3: Cross multiply
    631,128.39x = 871,012.08 × 359,137.95
  4. Step 4: Simplify right side
    631,128.39x = 312,813,492,836.44
  5. Step 5: Solve for x
    x = 312,813,492,836.44/631,128.39
  6. Step 6: Final answer
    x = 495,641.61

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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.