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Finding the Fourth Proportional to 851,700, 1,274,892.64 and 627,313.76

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Solution

The fourth proportional to 851,700, 1,274,892.64 and 627,313.76 is: 939,013.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,700 : 1,274,892.64 = 627,313.76 : x
  2. Step 2: Convert to fraction form
    851,700/1,274,892.64 = 627,313.76/x
  3. Step 3: Cross multiply
    851,700x = 1,274,892.64 × 627,313.76
  4. Step 4: Simplify right side
    851,700x = 799,757,695,594.73
  5. Step 5: Solve for x
    x = 799,757,695,594.73/851,700
  6. Step 6: Final answer
    x = 939,013.38

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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.