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Finding the Fourth Proportional to 851,702, 1,274,895.64 and 627,315.76

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Solution

The fourth proportional to 851,702, 1,274,895.64 and 627,315.76 is: 939,016.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,702 : 1,274,895.64 = 627,315.76 : x
  2. Step 2: Convert to fraction form
    851,702/1,274,895.64 = 627,315.76/x
  3. Step 3: Cross multiply
    851,702x = 1,274,895.64 × 627,315.76
  4. Step 4: Simplify right side
    851,702x = 799,762,127,327.29
  5. Step 5: Solve for x
    x = 799,762,127,327.29/851,702
  6. Step 6: Final answer
    x = 939,016.38

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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.