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Finding the Fourth Proportional to 662,787.60, 994,327.20 and 213,529.20

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Solution

The fourth proportional to 662,787.60, 994,327.20 and 213,529.20 is: 320,340.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,787.60 : 994,327.20 = 213,529.20 : x
  2. Step 2: Convert to fraction form
    662,787.60/994,327.20 = 213,529.20/x
  3. Step 3: Cross multiply
    662,787.60x = 994,327.20 × 213,529.20
  4. Step 4: Simplify right side
    662,787.60x = 212,317,891,554.24
  5. Step 5: Solve for x
    x = 212,317,891,554.24/662,787.60
  6. Step 6: Final answer
    x = 320,340.77

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1.5x scale

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.