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Finding the Fourth Proportional to 660,364.40, 990,546.60 and 656,427.80

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Solution

The fourth proportional to 660,364.40, 990,546.60 and 656,427.80 is: 984,641.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,364.40 : 990,546.60 = 656,427.80 : x
  2. Step 2: Convert to fraction form
    660,364.40/990,546.60 = 656,427.80/x
  3. Step 3: Cross multiply
    660,364.40x = 990,546.60 × 656,427.80
  4. Step 4: Simplify right side
    660,364.40x = 650,222,325,435.48
  5. Step 5: Solve for x
    x = 650,222,325,435.48/660,364.40
  6. Step 6: Final answer
    x = 984,641.70

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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.