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Finding the Fourth Proportional to 626,940.40, 940,410.60 and 451,105.60

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Solution

The fourth proportional to 626,940.40, 940,410.60 and 451,105.60 is: 676,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,940.40 : 940,410.60 = 451,105.60 : x
  2. Step 2: Convert to fraction form
    626,940.40/940,410.60 = 451,105.60/x
  3. Step 3: Cross multiply
    626,940.40x = 940,410.60 × 451,105.60
  4. Step 4: Simplify right side
    626,940.40x = 424,224,487,959.36
  5. Step 5: Solve for x
    x = 424,224,487,959.36/626,940.40
  6. Step 6: Final answer
    x = 676,658.40

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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.