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Finding the Fourth Proportional to 627,969.96, 866,621.28 and 359,749.80

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Solution

The fourth proportional to 627,969.96, 866,621.28 and 359,749.80 is: 496,467.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,969.96 : 866,621.28 = 359,749.80 : x
  2. Step 2: Convert to fraction form
    627,969.96/866,621.28 = 359,749.80/x
  3. Step 3: Cross multiply
    627,969.96x = 866,621.28 × 359,749.80
  4. Step 4: Simplify right side
    627,969.96x = 311,766,832,155.74
  5. Step 5: Solve for x
    x = 311,766,832,155.74/627,969.96
  6. Step 6: Final answer
    x = 496,467.75

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1.5x scale

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.