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Finding the Fourth Proportional to 521,165.80, 783,419.10 and 484,186.60

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Solution

The fourth proportional to 521,165.80, 783,419.10 and 484,186.60 is: 727,831.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,165.80 : 783,419.10 = 484,186.60 : x
  2. Step 2: Convert to fraction form
    521,165.80/783,419.10 = 484,186.60/x
  3. Step 3: Cross multiply
    521,165.80x = 783,419.10 × 484,186.60
  4. Step 4: Simplify right side
    521,165.80x = 379,321,030,404.06
  5. Step 5: Solve for x
    x = 379,321,030,404.06/521,165.80
  6. Step 6: Final answer
    x = 727,831.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.