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Finding the Fourth Proportional to 352,626.80, 528,940.20 and 345,628.40

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Solution

The fourth proportional to 352,626.80, 528,940.20 and 345,628.40 is: 518,442.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,626.80 : 528,940.20 = 345,628.40 : x
  2. Step 2: Convert to fraction form
    352,626.80/528,940.20 = 345,628.40/x
  3. Step 3: Cross multiply
    352,626.80x = 528,940.20 × 345,628.40
  4. Step 4: Simplify right side
    352,626.80x = 182,816,755,021.68
  5. Step 5: Solve for x
    x = 182,816,755,021.68/352,626.80
  6. Step 6: Final answer
    x = 518,442.60

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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.