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Finding the Fourth Proportional to 662,960.60, 994,440.90 and 289,712.60

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Solution

The fourth proportional to 662,960.60, 994,440.90 and 289,712.60 is: 434,568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,960.60 : 994,440.90 = 289,712.60 : x
  2. Step 2: Convert to fraction form
    662,960.60/994,440.90 = 289,712.60/x
  3. Step 3: Cross multiply
    662,960.60x = 994,440.90 × 289,712.60
  4. Step 4: Simplify right side
    662,960.60x = 288,102,058,685.34
  5. Step 5: Solve for x
    x = 288,102,058,685.34/662,960.60
  6. Step 6: Final answer
    x = 434,568.90

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Similar ratio
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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.