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Finding the Fourth Proportional to 660,550.80, 990,858.60 and 345,622.80

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Solution

The fourth proportional to 660,550.80, 990,858.60 and 345,622.80 is: 518,451.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,550.80 : 990,858.60 = 345,622.80 : x
  2. Step 2: Convert to fraction form
    660,550.80/990,858.60 = 345,622.80/x
  3. Step 3: Cross multiply
    660,550.80x = 990,858.60 × 345,622.80
  4. Step 4: Simplify right side
    660,550.80x = 342,463,323,736.08
  5. Step 5: Solve for x
    x = 342,463,323,736.08/660,550.80
  6. Step 6: Final answer
    x = 518,451.15

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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.