Home / 631,784.20-871,761.40-359,857.41

Finding the Fourth Proportional to 631,784.20, 871,761.40 and 359,857.41

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Solution

The fourth proportional to 631,784.20, 871,761.40 and 359,857.41 is: 496,545.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,784.20 : 871,761.40 = 359,857.41 : x
  2. Step 2: Convert to fraction form
    631,784.20/871,761.40 = 359,857.41/x
  3. Step 3: Cross multiply
    631,784.20x = 871,761.40 × 359,857.41
  4. Step 4: Simplify right side
    631,784.20x = 313,709,799,541.97
  5. Step 5: Solve for x
    x = 313,709,799,541.97/631,784.20
  6. Step 6: Final answer
    x = 496,545.81

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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.