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Finding the Fourth Proportional to 662,661.20, 993,991.80 and 452,709.20

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Solution

The fourth proportional to 662,661.20, 993,991.80 and 452,709.20 is: 679,063.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,661.20 : 993,991.80 = 452,709.20 : x
  2. Step 2: Convert to fraction form
    662,661.20/993,991.80 = 452,709.20/x
  3. Step 3: Cross multiply
    662,661.20x = 993,991.80 × 452,709.20
  4. Step 4: Simplify right side
    662,661.20x = 449,989,232,584.56
  5. Step 5: Solve for x
    x = 449,989,232,584.56/662,661.20
  6. Step 6: Final answer
    x = 679,063.80

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Double scale
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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.